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 within the greenhouse warms, the vent steadily 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 containing wax which expands when heated to press a piston, which raises the home window, as the atmosphere gets warmer, then agreements as it cools, closing with the use of a spring and resetting the piston. All you have to to do is definitely to install it on your own roof vent screen and it instantly starts operating. The Automatic Vent Opener functions without the use of electricity and is compatible with all Palram greenhouse versions 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 can provide care-free ventilation.
Ingenious temperature-sensitive device that automatically opens and closes coldframe lids, greenhouse windows and actually skylights. Works throughout the day and maintain a constant interior climate, something unattainable to accomplish by manual adjustments.
Requires simply 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 every our glazed season extenders since it dramatically boosts plant growth.
The hydraulic cylinder includes a 1 year warranty. The common duration of the cylinder is usually 5-10 years, even though some can last up to 20 years.
Screw directly into polycarbonate panels, wooden, or metal frames. The Automatic Greenhouse Vent Standard Vent Opener can open a hinged screen or vent weighing as much as 32 lb. For bigger panes use the more powerful Gigavent with all metallic construction, to lift up to 65 lbs.