AAADRESSES Greenhouse Window Ventilation Bracket, Automatic Ventilation Switch, Solar Thermal Window Opener, Automatic Window Opening Tool for Greenhouse
[Automatic Vent Opener]-- As the temperature changes automatically, this auto thermo for window maintains the best growing temperature and prevents your greenhouse from overheating.
[Greenhouse Helper]-- With this greenhouse vent autovent it can prevent greenhouse overheating. Ideal for your greenhouse window--opens and closes your greenhouse window. Start to open - 15°c - 25°c (60°-77F).
Fully open temperature 35° (19f) or above.
[Solar Energy]-- Non electric, uses solar energy, open or close the greenhouse vents as temperature rises or drops. This solar heat sensitive vent opener can lift up to 15 lbs. the cylinder closes well before deep freezing and opens again with no problem..
[Premium Quality]-- This solar heat sensitive adopted elongated aluminum cylinder with paint spraying, weather resistant. Aluminum frame looks more lustrous, durable and rust-proof..
[Warm Tips]-- Do not use this opener anywhere the temperature will exceed 45° (122F). To use with the greenhouse, you need to use the drilling tools to screw into the channel and fix it..
