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 air in the greenhouse warms, the vent gradually opens to enable the correct amount of air flow into the greenhouse and closes when the temperature cools. The vent arm was designed with a metal cylinder that contains wax which expands when heated to force a piston, which raises the window, as the air flow gets warmer, then contracts since it cools, closing with the use of a springtime and resetting the piston. All you need to do is definitely to install it on your roof vent windows and it instantly starts functioning. The Automatic Vent Opener works without the use of electricity and is compatible with all Palram greenhouse models only. The solar powered Vent Opener will start to open as temperature ranges within your greenhouse reach 68 degrees F with full-open at 80 degrees. It installs quickly and easily and will provide care-free ventilation.
Ingenious temperature-delicate device that automatically opens and closes coldframe lids, greenhouse windows and also skylights. Works throughout the day and maintain a constant interior climate, something impossible to attain by manual adjustments.
Requires no batteries or electricity.
It can be adjusted to start opening between 60-77°F. Fully open at 86-90°F. Fully closed at 55°F.
Strongly recommended for almost all our glazed season extenders since it dramatically improves plant growth.
The hydraulic cylinder comes with a 1 year warranty. The common duration of the cylinder is usually 5-10 years, even though some can last up to twenty years.
Screw directly into polycarbonate panels, wooden, or metal frames. The Standard Vent Opener can open a hinged windowpane or vent weighing as much as 32 lb. For bigger panes use the stronger Gigavent with all steel building, to lift up to 65 lbs.
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