JINGOU Greenhouse Vent Automatic Opener Solar Heat Sensitive, Auto Roof Vent Opener Greenhouse Accessories Roof Vent Auto Opener, Greenhouse Window Opener Ventilation, Lifts 15 Lbs (2pcs)

2 pieces of Greenhouse Vent Automatic Opener, Suitable for Most Greenhouses-- Up to 15lb load-bearing capacity, JINGOU greenhouse Automatic Vent Opener kit is suitable for most greenhouse. Maximum opening weight 7 kg, Maximum height approx. 45 cm. Solar Heat Sensitive Working Condition-- Solar 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. Upgraded Material, Reliable and Reusable-- JINGOU greenhouse side window automatic vent opener made of Zinc-coated Steel, Durable and Anti-rust , makes it has a longer servies time. Product Size 12x1.4 x1.57inch/31.5x3.5x4cm, Weight 0.97lb/440g. Automatic Opening/Closing, No Batteries or Electrical Power Needed--Using solar energy, the greenhouse automatic temperature controlled window opener automatically opens and closes through the thermal induction of temperature. Equipped with Screws, Easy To Install-- Greenhouse window opener automatic set of 2. Vent opener greenhouse equipped with screws, screw it into the panel , wood or metal frame directly with a screwdriver, simple and convenient.