Automatic Vent Kit for Greenhouses

Automatic Vent Kit for Greenhouses


16-Inch
Item # 37706
Available to ship.
$69.99
The kit runs on temperature-sensitive oil. When the surrounding temperature goes up above 60 degrees F, the oil will expand and this widens the kit. And when the kit widens, it automatically opens the vent of oil the vent of your greenhouse. It goes on like that. The higher the temperature, the wider the kit becomes. Needless to say this opens the vent more.

As the temperature begins to drop, the oil will begin to contract and the vent will be closing up gradually until when the temperature drops below 60 degrees F. This will close up the kit and automatically closes the vent.