Auto Vent Opener Automatic Greenhouse Window Opener Cylinder Roof Vent Opener Autovent Kit Solar Heat Sensitive Agriculture Gardening Tools Automatic Greenhouses Supplies (Single Spring Lifts 15 Lbs)

【Optimal Ventilation System】Your plants are optimally ventilated through temperature-controlled opening and closing. Depending on the temperature, the piston of the cylinder moves and opens or closes the window.. 【Premium Aluminum & Stainless Steel Build】The greenhouse accessories crafted with rust-resistant aluminum and stainless steel for long-lasting performance in humid conditions. Supports up to 15 lbs (7 kg) and opens windows up to 18 inches (45 cm).. 【Solar Heat Sensitive】Non electric, our window vent opener uses solar energy. Operating between 15°C to 25°C (60°F - 77°F), the greenhouse vent opener works when the temperature exceeds 77°F /25°C, solar vent opener will open. while temperature drops to 59°F /15°C, the greenhouse kit will shut down completely.. 【Easy Installation】Attach it directly to panels, metal frames, or wooden frames withwith the provided clamps and screws. You can steplessly adjust the opening angle by turning the cylinder and thus achieve the right ventilation for your bed.. 【Ideal for Your Greenhouse Window】 Greenhouse window opener fits most common garden and greenhouses. Note：Place the cylinder in a chilled environment for approximately 30 minutes. Then take out it, manually extend and retract the cylinder, and reinstall it properly for use.