The Automatic Vent Opener was made to automatically control the temperature and humidity levels and provide additional ventilation when needed, making gardening easier. As the atmosphere inside the greenhouse warms, the vent steadily opens to allow the correct amount of ventilation in to the greenhouse and closes when the temperature cools. The vent arm was made with a metallic cylinder that contains wax which expands when heated to force a piston, which raises the windows, as the atmosphere gets warmer, then contracts as it cools, closing with the use of a spring and resetting the piston. All you need to do can be to install it on your roof vent window and it automatically starts operating. The Automatic Vent Opener works without the use of electricity and is compatible with all Palram greenhouse versions only. The solar powered Vent Opener will start to open as temperatures inside your greenhouse reach 68 degrees F with full-open at 80 degrees. It installs efficiently and can provide care-free ventilation.
Ingenious temperature-delicate device that automatically opens and closes coldframe lids, greenhouse windows and also skylights. Works during the day and maintain a continuous interior climate, something not possible to accomplish by manual adjustments.
Requires no batteries or electricity.
It can be adjusted to begin opening between 60-77°F. Fully open up at 86-90°F. Fully closed at 55°F.
Strongly recommended for most our glazed season extenders because it dramatically improves plant growth.
The hydraulic cylinder comes with a 1 year warranty. The average lifetime of the cylinder is 5-10 years, although some can last up to 20 years.
Screw directly into polycarbonate panels, wooden, or metal frames. The Standard Vent Opener can open up a hinged window or vent weighing just as much as 32 lb. For larger panes use the stronger Gigavent with all metal structure, to lift up to 65 lbs.
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