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 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 steel cylinder that contains wax which expands when heated to push a piston, which raises the windowpane, as the air gets warmer, then contracts as it cools, closing with the usage of a spring and resetting the piston. All you have to to do is to install it on your roof vent windows and it instantly starts operating. The Automatic Vent Opener functions without the use of electricity and works with with all Palram greenhouse versions only. The solar powered Vent Opener will start to open as temperatures within 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 constant interior climate, something not possible to achieve by manual adjustments.
Requires simply no batteries or electricity.
It can be adjusted to begin opening between 60-77°F. Fully open at 86-90°F. Fully closed at 55°F.
Strongly recommended for all our glazed season extenders since it dramatically increases plant growth.
The hydraulic cylinder comes with a 1 year warranty. The common duration of the cylinder is 5-10 years, although some can last up to twenty years.
Screw directly into polycarbonate panels, wooden, or metal frames. The Standard Vent Opener can open up a hinged window or vent weighing as much as 32 lb. For bigger panes use the stronger Gigavent with all metallic construction, to lift up to 65 lbs.
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