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Automatic Greenhouse Window Vent Opener, Double-Spring Roof Window Vent Opener, Solar-Powered Greenhouse Window Opener Ventilation, Greenhouse Accessories, Auto Roof Vent Opener, Lifts 30lbs

Price: $29.99
Product prices and availability are accurate as of 2024-07-23 08:29:15 UTC and are subject to change. Any price and availability information displayed on https://www.amazon.com/ at the time of purchase will apply to the purchase of this product.
Availability: Not Available Discontinued
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Product Features

[ High Quality Material ] This greenhouse window opener is made of quality galvanized steel plate, which is durable and not easy to rust and weather resistant. [Automatic Switch ] The vent opener do not require batteries or electricity. As the temperature and pressure rise, the spring force will open the window when the temperature exceeds 77 ?(25 ?), when the temperature reaches 86? (30?) , the windows will open to the maximum; if the temperature drops to 59 ?(15 ?), the greenhouse window will close completely and the spring will push the air rod back into the cylinder. [Double-Spring] Our greenhouse vent opener improves the low load capacity of single-spring window openers, which is more powerful and can open windows up to 30 lbs, the maximum height of the open window is about 45 cm/18 in. [ Universal Fit for Most Greenhouses] This window opener is suitable for most aluminum frame and wood frame greenhouse windows and greenhouse vents, so as to maintain good growth temperature, to prevent your greenhouse overheating. [Easy to Install] We have an installation manual in the package for your reference.

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