The Automatic Vent Opener was made to automatically control the temperature and humidity levels and offer additional ventilation when needed, making gardening easier. As the surroundings within the greenhouse warms, the vent gradually opens to allow the right amount of ventilation in to the greenhouse and closes when the temperature cools. The vent arm was designed with a metallic cylinder containing wax which expands when heated to drive a piston, which raises the window, as the air gets warmer, then agreements since it cools, closing with the utilization of a spring and resetting the piston. All you have to to do can be to install it on your roof vent windowpane and it immediately starts working. The Automatic Vent Opener operates without the use of electricity and is compatible with all Palram greenhouse versions only. The solar driven Vent Opener will start to open as temperatures inside your greenhouse reach 68 degrees F with full-open at 80 degrees. It installs quickly and easily and can provide care-free ventilation.
Ingenious temperature-sensitive device that automatically opens and closes coldframe lids, greenhouse windows and actually skylights. Works during the day and maintain a constant interior climate, something impossible to attain by manual adjustments.

Requires simply no batteries or electricity.
It could be adjusted to start opening between 60-77°F. Fully open up at 86-90°F. Fully closed at 55°F.
Strongly recommended for every our glazed season extenders since it dramatically improves plant growth.
The hydraulic cylinder comes with a 1 year warranty. The average lifetime of the cylinder can be 5-10 years, even though some can last up to twenty years.

Screw directly into polycarbonate panels, wooden, or metal frames. THE TYPICAL Vent Opener can open up a hinged windowpane or vent weighing as much as 32 lb. For larger panes use the more powerful Gigavent with all metal construction, to lift up to 65 lbs.

Plunge right into Greenhouse Vent Opener with the details on our website.