The Palram automated vent arm for greenhouses protects your greenhouse by opening and closing the vent according to the outside temperature.
The arm is mechanically extended automatically and opens at warm temperature for air circulation and heat relief by using a wax cylinder. The arm closes when the temperature cools down.
The start opening point on this Palram automated vent arm for greenhouses is 12-15c and can be adjusted for specific needs. It comes with all fittings to connect to any Palram greenhouse and is also compatible to most of the other leading brands in the market.