2X Auto Greenhouse Window Opener, Solar Heat Sensitive Auto Vent Opener, Roof Vent Opener Gardening Tools for Sunlight Room Automatic Greenhouse Accessories (Single Spring Up to 15 Lbs)

🌴【Automatic Vent Opener】Greenhouse windows opener can open and shut your greenhouse window mechanically Accordding to temperature changes to handle the most efficient growing temperature and preventing your greenhouse from overheating.
🌴【Premium & Durable Subject matter】The window opener is manufactured from top of the range aluminum alloy, Durable and Anti-rust , makes it has a longer servies time.
🌴【Adjustable Temperature Range】Temperature range is adjustable from 15-25℃ (60-77℉)，full opening at temperatures above 30℃/86℉ and offers a maximum vent distance of 45cm (18″)(depending on adjustment and load).
🌴【Easy Installation & Wide Applicability】Quick and easy installation on not unusual garden and conservatory windows with the supplied clamps and screws, fit for such a lot of polycarbonate panels, wood, or metal frame greenhouse.
🌴【Energy-Efficient & Eco-Friendly】No batteries, electricity or additional power sources is wanted,our window vent opener uses solar power. Saving you money and Environmentally friendly.