{"title":"Greenhouse Vent Openers: Automatic Climate Control Accessories","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003eGreenhouse vent openers designed to help your Growing Dome® greenhouse regulate airflow, temperature, and humidity with ease. Our selection includes automatic vent openers that respond to temperature changes—opening vents as it warms and closing them when it cools—all without electricity or manual effort. \u003c\/p\u003e\n\u003cp\u003eThese openers work together with your greenhouse’s ventilation system to promote healthy plant growth, prevent overheating, and maintain stable internal conditions year-round. Whether you’re replacing worn pistons or upgrading your ventilation setup, these vent openers ensure your greenhouse performs efficiently and reliably.\u003c\/p\u003e","products":[{"product_id":"univent-piston","title":"Univent Piston","description":"\u003cp\u003e*Univent Piston only. No hinge mechanism or hardware included.\u003c\/p\u003e\n\u003cp\u003eThese automatic vent openers are heat activated and they require no electricity to operate. Proper air circulation and ventilation is imperative to grow high quality produce year-round. A bent, broken, or worn out vent opener can invite pests and disease; always check to ensure that your vents are opening and closing properly. Often, a malfunctioning opener can be brought back to life by replacing the pistons. We can help you diagnose the cause of failure if your vents are not opening.\u003c\/p\u003e\n\u003cp\u003eSpecifications:\u003c\/p\u003e\n\u003cp\u003eAutomatically opens between 60 - 77 degrees Fahrenheit. Maximum opening at 80 degrees Fahrenheit. Maximum window opening approximately 32 inches depending on adjustment and load.\u003c\/p\u003e\n\u003cp\u003eUsed on solar fan shutters for all size domes.\u003c\/p\u003e\n\u003cp\u003e15' Domes: Both lower vents\u003c\/p\u003e\n\u003cp\u003e22' Domes: Both lower vents\u003c\/p\u003e\n\u003cp\u003eWinter Storage: It is recommended to remove the Univent piston from the opener and store it inside in a cool\/dry place. Lubricate the piston threads and check that the piston rod is moving before reinstalling in the Spring.\u003c\/p\u003e","brand":"Orbesen Teknik","offers":[{"title":"Default Title","offer_id":38088296038576,"sku":"GS-PART-00026","price":20.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0356\/8422\/0972\/products\/univent-piston-web.jpg?v=1624571318"},{"product_id":"univent-opener","title":"Univent Opener","description":"\u003cp\u003e*The entire Univent assembly. Includes the piston, hinge mechanism, and hardware for mounting. \u003c\/p\u003e\n\u003cp\u003eThe automatic vent openers are heat activated and they require no electricity to operate. Proper air circulation and ventilation is imperative to grow high quality produce year-round. A bent, broken, or worn out vent opener can invite pests and disease; always check to ensure that your vents are opening and closing properly. Often, a malfunctioning opener can be brought back to life by replacing the pistons. We can help you diagnose the cause of failure if your vents are not opening. \u003c\/p\u003e\n\u003cp\u003eSpecifications:\u003c\/p\u003e\n\u003cp\u003eAutomatically opens between 60 - 77 degrees Fahrenheit. Maximum opening at 80 degrees Fahrenheit. Maximum window opening approximately 32 inches depending on adjustment and load.\u003c\/p\u003e\n\u003cp\u003eUsed on solar fan shutters for all size domes.\u003c\/p\u003e\n\u003cp\u003e15' Domes: Both lower vents\u003c\/p\u003e\n\u003cp\u003e22' Domes: Both lower vents\u003c\/p\u003e\n\u003cp\u003eWinter Storage: It is recommended to remove the Univent piston from the opener and store it inside in a cool\/dry place. Lubricate the piston threads and check that the piston rod is moving before reinstalling in the Spring.\u003c\/p\u003e","brand":"Orbesen Teknik","offers":[{"title":"Default Title","offer_id":38088296071344,"sku":"GS-PART-00025","price":49.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0356\/8422\/0972\/products\/Univent-Installed-on-Bottom-Vent-for-web.jpg?v=1624573599"},{"product_id":"gigavent-piston","title":"Gigavent Piston","description":"\u003cp\u003e*Replacement Gigavent piston only. Does not include hardware or hinge mechanism. \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe automatic vent openers are heat activated and they require no electricity to operate. Proper air circulation and ventilation is imperative to grow high quality produce year-round. A bent, broken, or worn out vent opener can invite pests and disease; always check to ensure that your vents are opening and closing properly. Often, a malfunctioning opener can be brought back to life by replacing the pistons. We can help you diagnose the cause of failure if your vents are not opening. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eSpecifications:\u003c\/p\u003e\n\u003cp\u003eOpens between 56 and 70 degrees Fahrenheit. Maximum opening at 90 degrees Fahrenheit. Maximum window opening of 18 inches. \u003c\/p\u003e\n\u003cp\u003e18' Dome: Upper vent\u003c\/p\u003e\n\u003cp\u003e26' Dome: Both upper vents\u003c\/p\u003e","brand":"Orbesen Teknik","offers":[{"title":"Default Title","offer_id":38088296136880,"sku":"GS-PART-00012","price":65.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0356\/8422\/0972\/products\/gigavent-piston.jpg?v=1624571264"},{"product_id":"gigavent-opener","title":"Gigavent Opener","description":"\u003cp\u003e*Gigavent opener with hardware, hinge mechanism, and piston. \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe automatic vent openers are heat activated and they require no electricity to operate. Proper air circulation and ventilation is imperative to grow high quality produce year-round. A bent, broken, or worn out vent opener can invite pests and disease; always check to ensure that your vents are opening and closing properly. Often, a malfunctioning opener can be brought back to life by replacing the pistons. We can help you diagnose the cause of failure if your vents are not opening. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eSpecifications:\u003c\/p\u003e\n\u003cp\u003eOpens between 56 and 70 degrees Fahrenheit. Maximum opening at 90 degrees Fahrenheit. Maximum window opening of 18 inches. \u003c\/p\u003e\n\u003cp\u003e18' Dome: Upper vent\u003c\/p\u003e\n\u003cp\u003e26' Dome: Both upper vents\u003c\/p\u003e","brand":"Orbesen Teknik","offers":[{"title":"Default Title","offer_id":38088296169648,"sku":"GS-PART-00011","price":150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0356\/8422\/0972\/products\/GreenhouseVentGigaventOpener.jpg?v=1624570773"},{"product_id":"bayliss-piston","title":"Standard Bayliss Piston","description":"\u003cp\u003e*Bayliss piston and retainer ring only. No hardware or hinge brackets. \u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eBayliss vent openers are heat-activated and require no electricity to operate. Proper air circulation and ventilation are imperative to grow high-quality produce year-round. A bent, broken, or worn-out vent opener can invite pests and disease; always check to ensure that your vents are opening and closing properly.\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eOften, a malfunctioning opener can be brought back to life by replacing the pistons. We can help you diagnose the cause of failure if your vents are not opening.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eSpecifications:\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eOpens between 55-65 degrees Fahrenheit. \u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003eMaximum opening distance of 12 inches.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eThe small hydraulic damper which Bayliss calls ‘hydraulicheck’ added to the MK7 Autovent makes it suitable for use in severe weather conditions. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e15' Dome: Upper vent\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e18' Dome: Both lower vents\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e22' Dome: Both upper vents\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e26' Dome: Both lower vents\u003c\/span\u003e\u003c\/p\u003e","brand":"Bayliss","offers":[{"title":"Default Title","offer_id":38088296202416,"sku":"GS-PART-00008","price":32.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0356\/8422\/0972\/products\/Bayliss-piston-web.jpg?v=1624571195"},{"product_id":"bayliss-opener","title":"MK7 Hydraulicheck Autovent Bayliss Opener","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eThe mechanism comes with a piston, hinge, and hardware for mounting on the crossbar. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eBayliss vent openers are heat-activated and require no electricity to operate. Proper air circulation and ventilation are imperative to grow high-quality produce year-round. A bent, broken, or worn-out vent opener can invite pests and disease; always check to ensure that your vents are opening and closing properly. Often, a malfunctioning opener can be brought back to life by replacing the pistons. We can help you diagnose the cause of failure if your vents are not opening.\u003c\/p\u003e\n\u003cp\u003eSpecifications:\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eOpens between 55-65 degrees Fahrenheit. \u003c\/span\u003e\u003cspan\u003eMaximum opening distance of 12 inches.\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe small hydraulic damper which Bayliss calls ‘hydraulicheck’ added to the MK7 Autovent makes it suitable for use in severe weather conditions. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e15' Dome: Upper vent\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e18' Dome: Both lower vents\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e22' Dome: Both upper vents\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e26' Dome: Both lower vents\u003c\/span\u003e\u003c\/p\u003e","brand":"Bayliss","offers":[{"title":"Default Title","offer_id":38088296235184,"sku":"GS-PART-00007","price":129.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0356\/8422\/0972\/products\/Greenhouse-vent-Bayliss-Opener-600x398_5d438d90-c795-4e3f-b322-f3fc2fb65c08.jpg?v=1625758374"}],"url":"https:\/\/checkout.growingspaces.com\/collections\/openers.oembed","provider":"Growing Spaces","version":"1.0","type":"link"}