{"product_id":"grandio-automatic-roof-vent-opener","title":"Grandio Automatic Roof Vent Opener","description":"\u003ch1 data-pm-slice=\"1 1 []\"\u003e\u003cspan\u003eGrandio Automatic Roof Vent Opener\u003c\/span\u003e\u003c\/h1\u003e\n\u003cp\u003e\u003cspan\u003eThis automatic opener adjusts a greenhouse roof vent as temperatures change, helping release warm air without daily manual adjustment.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eA temperature-sensitive wax cylinder opens the vent progressively as heat builds. As the greenhouse cools, a spring closes it. Operation requires no electricity, batteries, or wiring.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eKey Features\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eAutomatic Ventilation\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Opens and closes the roof vent in response to temperature changes.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eGradual Movement\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Adjusts the opening progressively as the greenhouse warms or cools.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003ePower-Free Operation\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Continues working during power outages.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eAdjustable Opening Temperature\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Turning the cylinder changes the temperature at which the vent begins opening.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eReplaceable Cylinder\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: The cylinder can be replaced without replacing the complete opener.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eSpecifications\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eOperating Mechanism\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Temperature-sensitive wax cylinder with spring return\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003ePower Requirement\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: No electricity or batteries\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eMaximum Vent Weight\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: 7 kg or 15 lb.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eMaximum Vent Opening\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Approximately 45 cm or 18 in.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eMaximum Opening Temperature\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: 30°C or 86°F, depending on adjustment and load\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eTemperature Limit\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Do not use where temperatures exceed 50°C or 122°F\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eQuantity Required\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: 1 opener per roof vent\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eSize Guide\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eVent Weight Capacity\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Up to 7 kg or 15 lb.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eMaximum Opening Travel\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Approximately 45 cm or 18 in.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCompatibility\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCompatible With: All Grandio greenhouse roof vents, including Element, Ascent, Elite, and Summit models.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eIncluded\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e1 cylinder\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1 cylinder housing\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1 piston rod\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1 clutch T\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1 hair pin\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1 stop pin\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1 Arm B\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1 Arm A\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1 frame bracket\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1 window bracket\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e2 clamps\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e4 screws, 4 × 16\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e4 screws, M4 × 12\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e2 AFS-610 fasteners\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e2 square nuts\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1 Allen wrench\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eCare and Maintenance\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eLubricate moving parts after installation, each spring, and as needed during summer. Occasionally grease the cylinder thread.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eRemove the opener or cylinder for winter and store it in a dry place. Lubricate the piston rod and check its movement before reinstalling.\u003c\/span\u003e\u003c\/p\u003e","brand":"Grandio","offers":[{"title":"Window Opener","offer_id":42267199832145,"sku":"AUTO-ROOF","price":89.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0647\/4376\/8145\/files\/1_296d72b7-50be-4a09-8488-c47e059ce9d9.png?v=1791809865","url":"https:\/\/dreamlandgardens.com\/products\/grandio-automatic-roof-vent-opener","provider":"Dreamland Gardens","version":"1.0","type":"link"}