{"product_id":"alton-bayliss-xl-roof-auto-opener","title":"Alton Bayliss XL Roof Auto Opener","description":"\u003cdiv style=\"text-align: left;\"\u003e\u003ca href=\"https:\/\/moderngardendirect.com\/collections\/alton?grid_list=grid-view\u0026amp;filter.v.price.gte=\u0026amp;filter.v.price.lte=\" target=\"_blank\"\u003e\u003cimg style=\"margin-bottom: 16px; float: none; display: block; margin-left: auto; margin-right: auto;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0886\/9396\/5106\/files\/alton-wooden-greenhouses_160x160.png?v=1735121081\"\u003e\u003c\/a\u003e\u003c\/div\u003e\n\u003ch4 style=\"text-align: center;\"\u003eAlton Bayliss XL Roof Auto Opener\u003c\/h4\u003e\n\u003cdiv class=\"container\"\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"col-md-4 d-none d-xl-block linksun lispace\"\u003e\n\u003cdiv class=\"product-tabs\"\u003e\n\u003cdiv class=\"tab-content responsive hidden-xs hidden-sm\" id=\"tab-content\"\u003e\n\u003cdiv class=\"tab-pane active\" id=\"tab_info\"\u003e\n\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv data-is-intersecting=\"true\" data-turn-id-container=\"request-WEB:f44c781a-5de3-403d-836e-f68da82ba33e-4\" class=\"\"\u003e\n\u003csection data-turn=\"assistant\" data-scroll-anchor=\"false\" data-testid=\"conversation-turn-2\" data-turn-id-container=\"request-WEB:f44c781a-5de3-403d-836e-f68da82ba33e-4\" data-turn-id=\"request-WEB:f44c781a-5de3-403d-836e-f68da82ba33e-4\" dir=\"auto\" class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-turn-start-message=\"true\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" data-message-model-slug=\"gpt-5-5\" dir=\"auto\" data-message-id=\"5e4b229e-572b-49b9-832f-fee237fbc39a\" data-message-author-role=\"assistant\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003eBayliss Clip-On Automatic Greenhouse Vent Opener\u003cspan\u003e \u003c\/span\u003eis a simple, reliable solution for maintaining the ideal temperature inside your greenhouse, without constant monitoring. Designed for convenience and performance, this unit automatically opens and closes your roof vent based on temperature changes, helping protect your plants from overheating.\u003c\/p\u003e\n\u003cp\u003eBuilt to lift up to 12 lbs (5.5 kg), this auto vent opener provides a maximum opening of approximately 12 inches, allowing consistent airflow when your greenhouse needs it most. Its compact 11-inch design and satin anodized finish deliver both durability and a clean, professional look that complements most greenhouse frames.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul class=\"content-p\"\u003e\n\u003cli\u003eWide compatibility: Fits Thermofor, Robinsons, and Alton louver vent openers.\u003c\/li\u003e\n\u003cli\u003eRestores automatic ventilation: Keeps airflow consistent and responsive to temperature changes.\u003c\/li\u003e\n\u003cli\u003eHeat-powered operation: No electricity or batteries required.\u003c\/li\u003e\n\u003cli\u003eReplacement cylinder only: No fittings or mounting hardware included.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eProduct Type: Automatic greenhouse vent opener\u003c\/li\u003e\n\u003cli\u003eInstallation Style: Clip-on\u003c\/li\u003e\n\u003cli\u003eMaximum Vent Opening: Approximately 12 inches\u003c\/li\u003e\n\u003cli\u003eMaximum Lifting Capacity: 12 lbs (5.5 kg)\u003c\/li\u003e\n\u003cli\u003eUnit Length: 11 inches\u003c\/li\u003e\n\u003cli\u003eFinish: Satin anodized\u003c\/li\u003e\n\u003cli\u003ePower Source: Heat expansion, no electricity or batteries required\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow it works\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eAutomatic greenhouse vent openers are one of the most effective ways to regulate temperature and protect your plants year-round. As temperatures rise, the opener gradually lifts the vent to release excess heat. When it cools down, the vent closes automatically, helping maintain a stable growing environment day and night.\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cul class=\"content-p\"\u003e\u003c\/ul\u003e\n\u003c!----\u003e","brand":"Alton","offers":[{"title":"Default Title","offer_id":51212298518834,"sku":"ALTBAXLAU","price":150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0886\/9396\/5106\/files\/main-image-white-background_d2755c58-99c4-4567-8c4a-20154882f502.jpg?v=1779790769","url":"https:\/\/moderngardendirect.com\/products\/alton-bayliss-xl-roof-auto-opener","provider":"Modern Garden Direct","version":"1.0","type":"link"}