Automatic Greenhouse Ventilation Solar Thermal Roof Ventilation Automatic Window Opener, Greenhouse Roof Ventilation and Cold Frame Greenhouse Automatic Temperature Control Support Accessories(1Set)

?Product name?: Automatic greenhouse ventilation opener Solar thermal roof ventilation automatic window opener. These automatic greenhouse window openers are mainly made of high-quality aluminum alloy materials, which are durable and not easy to break or rust, and you can rest assured that you can use them. Reusable? ?Features?: Temperature control window opener intelligent: with the change of temperature, the window of the greenhouse automatically opens, maintains the optimal growth temperature, and prevents the greenhouse from overheating. Open/close automatically. Greenhouse window openers do not consume any electricity and do not require batteries or electricity. temperature control window opener support, thermal expansion and contraction, opening and closing with temperature, strong support. ?Easy installation?: No need for electricity: The use of solar energy, with the rise and fall of temperature, open or close the greenhouse vent, and clip on the greenhouse pole, no need to punch holes, convenient construction. Easy installation: Easily attach to your greenhouse vent or window using the provided screws and clamps or your own fasteners. ?Usage?: Automatic greenhouse ventilation window bracket opener, suitable for greenhouse Windows, walls and amateur vents under high air volume environment. Multi-wire greenhouses, pre-installed roof vents open between 59-77°F instead of manual exhaust arms screwed directly into polycarbonate panels, wood or metal frames. Maximum number of open Windows. 45cm/18 ", depending on adjustment and load. Suitable for greenhouse Windows weighing up to 7 kg. Suitable for most greenhouses. ?Package?: 1 set of automatic greenhouse ventilation opener. (If more than 7kg, it is recommended to use two window openers). Do not use this window opener when the temperature exceeds 50°(122F). Here's our 90-day money-back risk-Free Purchase Guarantee › View more product details.