Automatic Vent Kit for Greenhouses

Automatic Vent Kit for Greenhouses

Get Air Circulating in Your Greenhouse!


16-Inch
Item # 37706
Available to ship.
$69.99
This is a great initiative. It takes the burden of keeping tabs on your greenhouse off you. Whenever the atmospheric temperature rises above 60o F, the kit will widen up, thereby opening the vent of your greenhouse. The hotter it becomes, the wider it opens the vent. Amazing! Isn't? Actually, it is controlled by the oil in it. The oil is very sensitive to temperature. When it is hot, the oil will expand and this widens the kit. The oil expands more as the temperature becomes even higher and the vent will be opened more until it gets to the limit.

On the other hand, when the temperature drops, the oil will begin to contract. This leads to closing of the vent. It closes gradually until it is fully closed. You do not have to bother about that again.