{"title":"Sawtooth Greenhouse","description":null,"products":[{"product_id":"single-half-arch-sawtooth-greenhouse","title":"Single Half-Arch Sawtooth Greenhouse","description":"\u003cdiv data-zone-id=\"0\" data-line-index=\"0\" data-line=\"true\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cmeta http-equiv=\"Content-Type\" content=\"text\/html; charset=utf-8\"\u003e\n\u003cdiv\u003e\n\u003cdiv data-zone-id=\"0\" data-line-index=\"0\" data-line=\"true\"\u003e\u003cspan\u003eDefined by its straight sloped roof and full-height vertical vent running from ridge to gutter. This full sawtooth opening delivers the largest ventilation area of any sawtooth type — hot air exhausts directly with no restriction — making it the most effective natural-ventilation sawtooth design for warm and hot climates.An evolved sawtooth design that replaces the straight roof slope with a single smooth arch. This curved roof distributes rain and snow loads more evenly across the frame, improving structural durability over a triangular sawtooth, while the half-height vertical vent maintains effective natural ventilation. A balanced, mid-range option — more robust than a straight-slope sawtooth, simpler than a double-arch design — well suited to medium-scale farms and regions with moderate snow and wind.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv data-zone-id=\"0\" data-line-index=\"0\" data-line=\"true\"\u003e  \u003c!-- split --\u003e\n\u003cdiv\u003e\n\u003ch4 data-zone-id=\"0\" data-line-index=\"0\" data-line=\"true\"\u003e\n\u003cstrong\u003eKey Highlights\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h4\u003e\n\u003cdiv data-zone-id=\"0\" data-line-index=\"0\" data-line=\"true\"\u003e\n\u003cdiv data-zone-id=\"0\" data-line-index=\"0\" data-line=\"true\"\u003e· Single smooth curved arch roof distributes snow and wind loads evenly — better structural durability than a straight-slope triangular sawtooth\u003cbr\u003e· Half sawtooth vent with curved roof airflow guidance — effective natural ventilation for moderate climates\u003cbr\u003e· Hot-dip galvanized steel frame, 275g\/m² zinc coating, 15+ year service life\u003cbr\u003e· Balanced mid-range design — more robust than triangular, simpler than double-arch — ideal for medium-scale farms\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch4 data-zone-id=\"0\" data-line-index=\"0\" data-line=\"true\"\u003e\u003cstrong\u003eProduct Overview — Curved Roof Strength, Balanced Performance\u003c\/strong\u003e\u003c\/h4\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv data-zone-id=\"0\" data-line-index=\"0\" data-line=\"true\"\u003e\n\u003cspan\u003eThe PONSUNO Single Half-Arch Sawtooth Greenhouse advances the original triangular sawtooth design by replacing its straight roof slope with a single, smooth curved arch running from the top of the vertical vent wall down to the gutter. This single half-arch profile gives the greenhouse its name and its defining characteristic: a curved load-bearing surface that distributes rain, snow, and wind pressure more evenly than a straight plane. The result is a structure that is more durable under snow load than a triangular sawtooth, while remaining simpler and more compact than a double-arch sawtooth.\u003c\/span\u003e\n\u003cdiv\u003e\n\u003cdiv data-zone-id=\"0\" data-line-index=\"2\" data-line=\"true\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003cb\u003eStructure \u0026amp; Materials. \u003c\/b\u003e\u003c\/span\u003eThe load-bearing frame uses hot-dip galvanized steel with a 275g\/m² zinc coating. Columns range from 50mm to 150mm diameter, sized by span and local loads. The roof arch is formed by bending steel pipe (typically 25–50mm diameter) to a single continuous curve — one end connects to the top of the vertical vent wall, the other to the gutter. Gutters are press-formed galvanized steel (1.5–2.5mm) running the full length between bays. The half sawtooth vent is operated by a rack-and-pinion or roll-film drive. All connections are bolted with galvanized hardware; no field welding required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003cb\u003eStructural Performance.\u003c\/b\u003e\u003c\/span\u003e—The Curved Roof Advantage. Unlike a straight-slope triangular sawtooth, where snow accumulates and load concentrates at the ridge and gutter, the curved arch roof distributes vertical loads across the entire arch profile. This reduces peak stress at any single connection point and allows the greenhouse to achieve a higher snow load rating (typically 0.25–0.35 kN\/m²) than a triangular sawtooth of equivalent steel weight. The curved surface also sheds snow more readily — once snow begins to slide on the upper curve, gravity carries it the rest of the way down.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003cb\u003eVentilation. \u003c\/b\u003e\u003c\/span\u003eThe vent is classified as a \"half sawtooth\" — it does not extend the full height to the ridge, as the curved arch occupies the upper portion of the bay. The vent opening runs from the shoulder or mid-wall up to the base of the arch. While the vent area is smaller than a full sawtooth (triangular) design, the curved roof profile helps guide rising warm air toward the vent opening, maintaining good natural ventilation performance. For most moderate climates, this delivers sufficient summer cooling without mechanical assistance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003cb\u003eTrade-Offs. \u003c\/b\u003e\u003c\/span\u003eTwo limitations should be noted. First, the half sawtooth vent area is smaller than a full sawtooth, so in very hot climates the natural ventilation capacity may be lower than a triangular sawtooth of the same size. Second, the single-arch profile is less aerodynamic than a double-arch design, making it better suited to regions with moderate rather than extreme wind.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003cb\u003eCovering \u0026amp; Integrated Systems. \u003c\/b\u003e\u003c\/span\u003eRoof covering is standard 150–200 micron PE\/PO\/EVA film (anti-fog, anti-drip, UV-stabilized), with polycarbonate available for greater insulation. Side walls are selectable: film, polycarbonate hollow sheet, color steel sandwich panel, or glass. The structure supports the full range of add-on systems — side ventilation, internal\/external shading (30%–85%), heating, drip or spray fertigation, multi-zone environmental control, and supplemental lighting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- specs --\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; border-spacing: 0;\"\u003e\n\u003ccolgroup\u003e \u003ccol style=\"width: 32%;\"\u003e \u003ccol style=\"width: 68%;\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; color: #111111; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eStructure Type\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eSingle half-arch sawtooth greenhouse (half sawtooth)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eRoof Profile\u003c\/td\u003e\n\u003ctd style=\"background-color: #f9fafb; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eSingle smooth curved arch + vertical vent wall\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eVent Type\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eHalf sawtooth vent (shoulder\/mid-wall to arch base)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eSpan Width (per span)\u003c\/td\u003e\n\u003ctd style=\"background-color: #f9fafb; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003e6m \/ 8m \/ 9.6m \/ 10m \/ 12m — customizable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eNumber of Spans\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003e1 – 10+ spans, customizable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eTotal Covered Area\u003c\/td\u003e\n\u003ctd style=\"background-color: #f9fafb; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003e300 m² – 20,000 m² (scalable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eLength\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003e20m – 200m, in 3m \/ 4m \/ 5m increments\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eGutter Height\u003c\/td\u003e\n\u003ctd style=\"background-color: #f9fafb; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003e2.5m \/ 3.0m \/ 4.0m — customizable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eRidge Height\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003e3.5m – 6.0m (varies by span and arch radius)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eBay Spacing\u003c\/td\u003e\n\u003ctd style=\"background-color: #f9fafb; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003e2m \/ 4m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eMain Frame Material\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eHot-dip galvanized steel, 275g\/m² zinc coating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eColumn Pipe Diameter\u003c\/td\u003e\n\u003ctd style=\"background-color: #f9fafb; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003e40mm \/ 50mm \/ 60mm \/ 80mm (per span \u0026amp; load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eArch Pipe Diameter\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003e25mm \/ 32mm \/ 40mm \/ 50mm (bent to arch profile)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eGutter\u003c\/td\u003e\n\u003ctd style=\"background-color: #f9fafb; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eHot-dip galvanized steel, 1.5 – 2.0mm thick, full-length drainage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eRoof Covering\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003e150–200 micron PE \/ PO \/ EVA film; optional polycarbonate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eSide-Wall Covering\u003c\/td\u003e\n\u003ctd style=\"background-color: #f9fafb; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eFilm \/ Polycarbonate hollow sheet \/ Color steel sandwich panel \/ Glass — selectable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eLight Transmission\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003e85% – 90% (film roof, new condition)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eNatural Ventilation\u003c\/td\u003e\n\u003ctd style=\"background-color: #f9fafb; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eHalf sawtooth vent + optional side vents\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eMechanical Cooling\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eOptional fan \u0026amp; pad evaporative cooling system\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eShading System\u003c\/td\u003e\n\u003ctd style=\"background-color: #f9fafb; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eOptional internal \/ external motorized shade net (30% – 85%)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eHeating System\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eOptional hot-water boiler \/ unit heater \/ radiant floor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eIrrigation \u0026amp; Fertigation\u003c\/td\u003e\n\u003ctd style=\"background-color: #f9fafb; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eOptional drip \/ spray \/ ebb-and-flow with automated dosing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eEnvironmental Control\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eOptional multi-zone sensor + central controller + remote app\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eSupplemental Lighting\u003c\/td\u003e\n\u003ctd style=\"background-color: #f9fafb; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eOptional LED \/ HPS grow light system\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eSnow Load Resistance\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003e0.25 – 0.35 kN\/m² (curved roof sheds snow better than straight slope)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eWind Load Resistance\u003c\/td\u003e\n\u003ctd style=\"background-color: #f9fafb; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eUp to 150 km\/h (reinforced options available)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eDoor\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eDouble sliding door or hinged door (1.5m × 2.5m standard)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eFoundation\u003c\/td\u003e\n\u003ctd style=\"background-color: #f9fafb; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eConcrete strip foundation or independent column foundation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eFrame Service Life\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003e15 – 20 years (with proper maintenance)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003eFilm Service Life\u003c\/td\u003e\n\u003ctd style=\"background-color: #f9fafb; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0; vertical-align: middle;\"\u003e3 – 5 years (depending on film grade and climate)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"我的商店","offers":[{"title":"Default Title","offer_id":67715172696277,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0828\/1030\/6773\/files\/SingleHalf-ArchSawtoothGreenhouse-1.png?v=1792243904"},{"product_id":"triangular-sawtooth-greenhouse","title":"Triangular Sawtooth Greenhouse","description":"\u003cdiv data-zone-id=\"0\" data-line-index=\"0\" data-line=\"true\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cmeta http-equiv=\"Content-Type\" content=\"text\/html; charset=utf-8\"\u003e\n\u003cdiv\u003e\n\u003cdiv data-zone-id=\"0\" data-line-index=\"0\" data-line=\"true\"\u003e\u003cspan\u003eDefined by its straight sloped roof and full-height vertical vent running from ridge to gutter. This full sawtooth opening delivers the largest ventilation area of any sawtooth type — hot air exhausts directly with no restriction — making it the most effective natural-ventilation sawtooth design for warm and hot climates.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv data-zone-id=\"0\" data-line-index=\"0\" data-line=\"true\"\u003e  \u003c!-- split --\u003e\n\u003cdiv\u003e\n\u003ch4 data-zone-id=\"0\" data-line-index=\"0\" data-line=\"true\"\u003e\n\u003cstrong\u003eKey Highlights\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h4\u003e\n\u003cdiv data-zone-id=\"0\" data-line-index=\"0\" data-line=\"true\"\u003e\n\u003cdiv data-zone-id=\"0\" data-line-index=\"0\" data-line=\"true\"\u003e· Full sawtooth vent from ridge to gutter — largest ventilation area of any sawtooth type, best natural cooling\u003cbr\u003e· Straight single-slope roof with triangular cross-section — clean structural lines, efficient rainwater drainage\u003cbr\u003e· Hot-dip galvanized steel frame, 275g\/m² zinc coating, 15+ year service life\u003cbr\u003e· Best matched to warm\/hot climates where natural ventilation is the primary cooling strategy\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch4 data-zone-id=\"0\" data-line-index=\"0\" data-line=\"true\"\u003e\u003cstrong\u003eProduct Overview — Maximum Ventilation, Clean Structural Lines\u003c\/strong\u003e\u003c\/h4\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv data-zone-id=\"0\" data-line-index=\"0\" data-line=\"true\"\u003e\n\u003cspan\u003eThe PONSUNO Triangular Sawtooth Greenhouse is the original and most classic sawtooth design. Its roof is a single straight slope forming a clean triangular cross-section, and the vertical vent wall runs the full height from ridge to gutter — a configuration known as a \"full sawtooth\" vent. This full-height opening gives it the largest ventilation area of any sawtooth type, making it the most effective natural-ventilation design for warm and hot climates.\u003c\/span\u003e\n\u003cdiv\u003e\n\u003cdiv data-zone-id=\"0\" data-line-index=\"2\" data-line=\"true\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003cb\u003eStructure \u0026amp; Materials. \u003c\/b\u003e\u003c\/span\u003eThe load-bearing frame uses hot-dip galvanized steel with a 275g\/m² zinc coating. Columns range from 50mm to 150mm diameter, sized by span and local loads. The roof is a single straight plane from the top of the vertical vent wall down to the gutter on the opposite side. Gutters are press-formed galvanized steel (1.5–2.5mm) running the full length between bays. The full sawtooth vent is operated by a rack-and-pinion drive system, allowing precise control of opening angle. All connections are bolted with galvanized hardware; no field welding required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003cb\u003eVentilation \u0026amp; Materials.\u003c\/b\u003e\u003c\/span\u003e— The Defining Advantage. Because the roof is straight and the vent wall is vertical, the vent opening can extend the entire height from ridge to gutter. This \"full sawtooth\" configuration gives a larger vent-to-floor ratio than either half-arch or double-arch sawtooth greenhouses, where the vent is truncated by the curved roof. Hot air rises and exits through this full-height opening with minimal resistance — measured natural ventilation rates are higher than curved-roof sawtooth types of the same footprint. For growers in warm or hot climates who rely on natural ventilation for summer cooling, this is the most effective sawtooth option available.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003cb\u003eTrade-Offs.\u003c\/b\u003e\u003c\/span\u003e—The straight roof has two limitations to be aware of. First, snow does not shed as readily as on a curved surface — in heavy-snow regions, the frame must be reinforced or the roof pitch increased. Second, very large spans (above 12m) concentrate load at the ridge and gutter connection, requiring heavier steel. For these reasons, the triangular sawtooth is best matched to warm, low-snow climates and moderate spans.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003cb\u003eCovering \u0026amp; Integrated Systems. \u003c\/b\u003e\u003c\/span\u003eRoof covering is standard 150–200 micron PE\/PO\/EVA film (anti-fog, anti-drip, UV-stabilized), with polycarbonate available for greater insulation. Side walls are selectable: film, polycarbonate hollow sheet, color steel sandwich panel, or glass. The structure supports the full range of add-on systems — side ventilation, internal\/external shading (30%–85%), heating, drip or spray fertigation, multi-zone environmental control, and supplemental lighting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv data-zone-id=\"0\" data-line-index=\"10\" data-line=\"true\"\u003e\n\u003cspan\u003e\u003cb\u003eWho It's For. \u003c\/b\u003e\u003c\/span\u003e\u003cspan\u003eGrowers in warm or hot climates prioritizing natural ventilation; vegetable and flower operations where summer cooling drives the design decision; and any project where maximum vent area and clean structural lines are the primary requirements.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- specs --\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; border-spacing: 0;\"\u003e\n\u003ccolgroup\u003e \u003ccol style=\"width: 32%;\"\u003e \u003ccol style=\"width: 68%;\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; color: #111111; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eStructure Type\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eTriangular sawtooth greenhouse (pointed \/ full sawtooth)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eRoof Profile\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eStraight single-slope roof, triangular cross-section\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eVent Type\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eFull sawtooth vent — ridge to gutter (maximum vent area)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eSpan Width (per span)\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003e6m \/ 8m \/ 9.6m \/ 10m \/ 12m — customizable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eNumber of Spans\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003e1 – 10+ bays, customizable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eTotal Covered Area\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003e300 m² – 20,000 m² (scalable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eLength\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003e20m – 200m, in 3m \/ 4m \/ 5m increments\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eGutter Height\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003e2.5m \/ 3.0m \/ 4.0m — customizable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eRidge Height\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003e3.5m – 6.0m (varies by span and roof pitch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eBay Spacing\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003e2m \/ 4m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eRoof Pitch\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003e20° – 30° (adjustable for snow load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eMain Frame Material\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eHot-dip galvanized steel, 275g\/m² zinc coating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eColumn Pipe Diameter\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003e40mm \/ 50mm \/ 60mm \/ 80mm (per span \u0026amp; load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eGutter\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eHot-dip galvanized steel, 1.5 – 2.0mm thick, full-length drainage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eRoof Covering\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003e150–200 micron PE \/ PO \/ EVA film; optional polycarbonate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eSide-Wall Covering\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eFilm \/ Polycarbonate hollow sheet \/ Color steel sandwich panel \/ Glass — selectable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eLight Transmission\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003e85% – 90% (film roof, new condition)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eNatural Ventilation\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eFull-height sawtooth vent (ridge to gutter) + optional side vents\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eMechanical Cooling\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eOptional fan \u0026amp; pad evaporative cooling system\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eShading System\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eOptional internal \/ external motorized shade net (30% – 85%)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eHeating System\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eOptional hot-water boiler \/ unit heater \/ radiant floor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eIrrigation \u0026amp; Fertigation\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eOptional drip \/ spray \/ ebb-and-flow with automated dosing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eEnvironmental Control\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eOptional multi-zone sensor + central controller + remote app\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eSupplemental Lighting\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eOptional LED \/ HPS grow light system\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eSnow Load Resistance\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003e0.20 – 0.30 kN\/m² (straight roof; reinforced options available)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eWind Load Resistance\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eUp to 150 km\/h (reinforced options available)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eDoor\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eDouble sliding door or hinged door (1.5m × 2.5m standard)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eFoundation\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eConcrete strip foundation or independent column foundation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eFrame Service Life\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003e15 – 20 years (with proper maintenance)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eFilm Service Life\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; color: #333333; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003e3 – 5 years (depending on film grade and climate)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"我的商店","offers":[{"title":"Default Title","offer_id":67715173187797,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0828\/1030\/6773\/files\/TriangularSawtoothGreenhouse-1.png?v=1792244845"},{"product_id":"double-half-arch-sawtooth-greenhouse","title":"Double Half-Arch Sawtooth Greenhouse","description":"\u003cdiv data-zone-id=\"0\" data-line-index=\"0\" data-line=\"true\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cmeta http-equiv=\"Content-Type\" content=\"text\/html; charset=utf-8\"\u003e\n\u003cdiv\u003e\n\u003cdiv data-zone-id=\"0\" data-line-index=\"0\" data-line=\"true\"\u003e\u003cspan\u003eThe most wind-resistant sawtooth greenhouse in the PONSUNO range, engineered for typhoon-prone and heavy-rainfall regions. Its roof is formed by two distinct curved sections — a short arch near the vertical vent wall and a longer arch extending to the gutter — creating the most aerodynamic profile of any sawtooth type. The blunt sawtooth vent runs vertically along the gutter side and does not reach the ridge, allowing it to remain open during sudden rainstorms without water ingress. Built for large-scale multi-bay commercial operations where structural reliability and year-round ventilation are non-negotiable.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv data-zone-id=\"0\" data-line-index=\"0\" data-line=\"true\"\u003e  \u003c!-- split --\u003e\n\u003cdiv\u003e\n\u003ch4 data-zone-id=\"0\" data-line-index=\"0\" data-line=\"true\"\u003e\n\u003cstrong\u003eKey Highlights\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h4\u003e\n\u003cdiv data-zone-id=\"0\" data-line-index=\"0\" data-line=\"true\"\u003e\n\u003cdiv data-zone-id=\"0\" data-line-index=\"0\" data-line=\"true\"\u003e· Two-radius curved roof (short arch + long arch) — most aerodynamic sawtooth profile, wind resistance up to 150 km\/h, engineered for typhoon regions\u003cbr\u003e· Blunt sawtooth vertical vent — stays open during rainstorms without water ingress, enabling uninterrupted summer ventilation\u003cbr\u003e· Dual-gutter drainage per bay + highest snow load rating among sawtooth types (0.30–0.45 kN\/m²)\u003cbr\u003e· Hot-dip galvanized steel frame, 275g\/m² zinc coating, 15+ year service life — built for large-scale multi-bay commercial operations\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch4 data-zone-id=\"0\" data-line-index=\"0\" data-line=\"true\"\u003e\u003cstrong\u003eProduct Overview — Engineered for Extreme Wind, Built for Scale\u003c\/strong\u003e\u003c\/h4\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv data-zone-id=\"0\" data-line-index=\"0\" data-line=\"true\"\u003e\n\u003cspan\u003eThe PONSUNO Double Half-Arch Sawtooth Greenhouse — also known as a \"blunt sawtooth\" — represents the most structurally advanced sawtooth design in our range. Developed for coastal and typhoon-prone regions, its roof is not a single curve or a straight slope, but two distinct arched sections: a shorter-radius arch near the vertical vent wall (typically no more than half the span width) and a longer-radius arch extending from the transition point to the gutter. This two-arch profile delivers the best aerodynamic performance of any sawtooth type, minimizing wind uplift and allowing the structure to withstand higher wind speeds than either triangular or single half-arch sawtooth greenhouses.\u003c\/span\u003e\n\u003cdiv\u003e\n\u003cdiv data-zone-id=\"0\" data-line-index=\"2\" data-line=\"true\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003cb\u003eStructure \u0026amp; Materials.\u003c\/b\u003e\u003c\/span\u003eThe load-bearing frame uses hot-dip galvanized steel with a 275g\/m² zinc coating. Columns range from 50mm to 150mm diameter — the upper end of this range is larger than other sawtooth types, reflecting the higher load requirements of typhoon-rated designs. The roof arch is formed by bending steel pipe to a two-radius profile: the short arch section near the vent wall and the long arch section toward the gutter. Each roof bay typically incorporates two gutters — one at the vent-wall base and one at the far end — providing redundant drainage capacity critical in heavy-rainfall regions. All connections are bolted with galvanized hardware; no field welding required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003cb\u003eAerodynamic Performance\u003c\/b\u003e\u003c\/span\u003e— The Defining Advantage. The two-arch roof profile is engineered to shed wind rather than catch it. Where a straight-slope triangular sawtooth creates a flat wind-facing surface and a single half-arch presents a uniform curve, the double-arch profile transitions smoothly from the vertical vent wall through the short arch and into the long arch, reducing pressure differentials across the roof surface. This translates directly to lower wind uplift forces on the frame and covering. In independent structural testing, double half-arch sawtooth greenhouses have demonstrated wind resistance up to 150 km\/h — significantly higher than triangular or single half-arch designs of equivalent steel weight.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003cb\u003eVentilation \u0026amp; Rain Protection\u003c\/b\u003e\u003c\/span\u003eThe vent is classified as a \"blunt sawtooth\" — it runs vertically along the gutter side of the bay but its upper edge does not reach the ridge (the short arch occupies the upper portion). While this means the vent area is smaller than a full sawtooth (triangular) design, it offers a critical operational advantage: because the vent opening is vertical and set back from the ridge, rain does not enter the greenhouse even when the vent is fully open during a downpour. In regions with sudden summer thunderstorms, this means the vent can stay open continuously through the hot season — no emergency closing required, no heat buildup inside, no crop stress from interrupted ventilation. This is a feature unique to the blunt sawtooth configuration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003cb\u003eStructural \u0026amp; Drainage Performance.\u003c\/b\u003e\u003c\/span\u003eThe curved two-arch roof distributes snow and rain loads more evenly than any straight-slope design, achieving the highest snow load rating among sawtooth types (typically 0.30–0.45 kN\/m²). The dual-gutter system per bay provides drainage capacity well beyond single-gutter designs, essential in regions with intense short-duration rainfall. The combination of aerodynamic roof shape, heavy-gauge frame, and redundant drainage makes this the most reliable sawtooth greenhouse for extreme weather conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003cb\u003eTrade-Offs.\u0026lt;\u003c\/b\u003e\u003c\/span\u003eTwo considerations. First, the two-radius arch fabrication is more complex than single-curve or straight members, resulting in higher material and manufacturing cost than other sawtooth types. Second, the blunt sawtooth vent area is smaller than a full sawtooth, so in extremely hot climates with no wind, natural ventilation capacity may be lower than a triangular sawtooth — though the ability to keep the vent open during rain partially offsets this in practice.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003cb\u003eCovering \u0026amp; Integrated Systems.\u003c\/b\u003e\u003c\/span\u003eRoof covering is standard 150–200 micron PE\/PO\/EVA film (anti-fog, anti-drip, UV-stabilized), with polycarbonate available for greater insulation. Side walls are selectable: film, polycarbonate hollow sheet, color steel sandwich panel, or glass. The structure supports the full range of add-on systems — side ventilation, internal\/external shading (30%–85%), heating, drip or spray fertigation, multi-zone environmental control, and supplemental lighting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv data-zone-id=\"0\" data-line-index=\"10\" data-line=\"true\"\u003e\n\u003cspan\u003e\u003cb\u003eWho It's For.\u003c\/b\u003e\u003c\/span\u003e\u003cspan\u003eLarge-scale commercial vegetable and flower growers in coastal or typhoon-prone regions; operations in areas with intense summer thunderstorms where continuous ventilation is critical; high-investment facility agriculture projects requiring maximum structural reliability; and growers planning multi-bay expansions where long-term durability outweighs initial cost.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- specs --\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; border-spacing: 0;\"\u003e\n\u003ccolgroup\u003e \u003ccol style=\"width: 32%;\"\u003e \u003ccol style=\"width: 68%;\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #e2f0d9; color: #111111; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; color: #111111; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #E2F0D9; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eStructure Type\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eDouble half-arch sawtooth greenhouse (blunt sawtooth)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #E2F0D9; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eRoof Profile\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eTwo-radius curved roof\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #E2F0D9; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eVent Type\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eBlunt sawtooth vent — vertical, not reaching ridge (rain-safe when open)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #E2F0D9; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eSpan Width (per span)\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003e6m \/ 8m \/ 9.6m \/ 10m \/ 12m — customizable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #E2F0D9; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eNumber of Spans\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003e1 – 10+ spans, customizable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #E2F0D9; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eTotal Covered Area\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003e500 m² – 30,000 m² (scalable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #E2F0D9; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eLength\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003e20m – 200m, in 3m \/ 4m \/ 5m increments\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #E2F0D9; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eGutter Height\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003e2.5m \/ 3.0m \/ 4.0m — customizable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #E2F0D9; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eRidge Height\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003e3.5m – 6.5m (varies by span and arch radii)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #E2F0D9; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eBay Spacing\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003e3m \/ 4m \/ 5m increments\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #E2F0D9; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eGutters per Bay\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003e2 (dual-gutter drainage system)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #E2F0D9; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eMain Frame Material\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eHot-dip galvanized steel, 275g\/m² zinc coating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #E2F0D9; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eColumn Pipe Diameter\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003e50mm \/ 60mm \/ 80mm \/ 100mm \/ 120mm \/ 150mm(per span \u0026amp; load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #E2F0D9; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eArch Pipe Diameter\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003e25mm \/ 32mm \/ 40mm \/ 50mm \/ 60mm (two-radius bend)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #E2F0D9; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eGutter\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eHot-dip galvanized steel, 1.5 – 2.5mm thick, dual full-length drainage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #E2F0D9; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eRoof Covering\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003e150–200 micron PE \/ PO \/ EVA film; optional polycarbonate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #E2F0D9; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eSide-Wall Covering\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eFilm \/ Polycarbonate hollow sheet \/ Color steel sandwich panel \/ Glass — selectable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #E2F0D9; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eLight Transmission\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003e85% – 90% (film roof, new condition)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #E2F0D9; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eNatural Ventilation\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eBlunt sawtooth vertical vent + optional side vents\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #E2F0D9; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eMechanical Cooling\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eOptional fan \u0026amp; pad evaporative cooling system\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #E2F0D9; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eShading System\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eOptional internal \/ external motorized shade net (30% – 85%)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #E2F0D9; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eHeating System\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eOptional hot-water boiler \/ unit heater \/ radiant floor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #E2F0D9; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eIrrigation \u0026amp; Fertigation\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eOptional drip \/ spray \/ ebb-and-flow with automated dosing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #E2F0D9; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eEnvironmental Control\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eOptional multi-zone sensor + central controller + remote app\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #E2F0D9; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eSupplemental Lighting\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eOptional LED \/ HPS grow light system\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #E2F0D9; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eSnow Load Resistance\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003e0.30 – 0.45 kN\/m² (highest among sawtooth types)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #E2F0D9; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eWind Load Resistance\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eUp to 150 km\/h (typhoon-rated, highest among sawtooth types)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #E2F0D9; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eDoor\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eDouble sliding door or hinged door (1.5m × 2.5m standard)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #E2F0D9; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eFoundation\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eConcrete strip foundation or independent column foundation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #E2F0D9; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eFrame Service Life\u003c\/td\u003e\n\u003ctd style=\"background-color: #f8f9fa; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003e15 – 20 years (with proper maintenance)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #E2F0D9; font-weight: 600; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003eFilm Service Life\u003c\/td\u003e\n\u003ctd style=\"background-color: #ffffff; padding: 12px 16px; border-bottom: 1px solid #e0e0e0;\"\u003e3 – 5 years (depending on film grade and climate)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"我的商店","offers":[{"title":"Default Title","offer_id":67715383099605,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0828\/1030\/6773\/files\/DoubleHalf-ArchSawtoothGreenhouse-1.png?v=1792245153"}],"url":"https:\/\/ponsuno.com\/collections\/sawtooth-greenhouse.oembed","provider":"PONSUNO","version":"1.0","type":"link"}