The Automatic Vent Opener was designed to automatically control the temperature and humidity amounts and provide additional ventilation when needed, making gardening easier. As the atmosphere inside the greenhouse warms, the vent gradually opens to enable the correct amount of ventilation into the greenhouse and closes when the temperature cools. The vent arm was made with a steel cylinder containing wax which expands when heated to press a piston, which raises the window, as the surroundings gets warmer, then agreements as it cools, closing with the use of a springtime and resetting the piston. All you need to do is certainly to install it on your roof vent windowpane and it instantly starts functioning. The Automatic Vent Opener operates without the utilization 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 efficiently and can provide care-free ventilation.
Ingenious temperature-delicate device that automatically opens and closes coldframe lids, greenhouse windows and actually skylights. Works during the day and maintain a continuous interior climate, something difficult to accomplish by manual adjustments.
Requires no batteries or electricity.
It could be adjusted to start 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 enhances plant growth.
The hydraulic cylinder comes with a 1 year warranty. The common lifetime of the cylinder is usually 5-10 years, although some can last up to 20 years.
Screw straight into polycarbonate panels, wood, or metal frames. THE TYPICAL Vent Opener can open a hinged windows or vent weighing just as much as 32 lb. For bigger panes use the more powerful Gigavent with all metallic structure, to lift up to 65 lbs.
If recently you, among your friends or family participant had any encounter with Greenhouse Vent Opener, do not wait to share your viewpoint in remarks.