Automatic opening of greenhouse window vents, heat-sensitive paint, double iron spring

Features:1.[Automatic Window Opener] The greenhouse window opener can automatically open and close your greenhouse window to maintain the highest temperature and prevent your greenhouse from overheating.
2.[Wide Applicability] The vent opener can be closed manually and is easy to install, suitable for most aluminum-framed greenhouses.
3.[Adjustable Temperature Range] The temperature range is adjustable from 15 to 25℃ (60 to 77℉) by rotating the cylinder, with a maximum opening of approximately 30℃/86℉ (depending on the setting and load).
4.[High-Quality Construction] Durable and rust-resistant iron window opener with a powder-coated finish for long-lasting use.
5.[15 lb Load Capacity] Use the standard vent opener to lift up to 7 kg / 15 lb.
Specifications:Description:
An ingenious temperature-sensitive automatic vent opener can automatically open and close the window frame, working very well to maintain the greenhouse within the preferred temperature range.The vent opener begins to open between 15 and 25 ℃ (60-77 ℉), depending on how you have adjusted the cylinder.

Features:
[Automatic Vent Opener] The greenhouse window opener can automatically open and close your greenhouse window to maintain the optimal growing temperature and prevent your greenhouse from overheating.
[Wide Applicability] The vent opener can be closed manually and is easy to install, suitable for most aluminum frames.