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 allow the right amount of air flow 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 press a piston, which raises the screen, as the air gets warmer, then contracts since it cools, closing with the use of a springtime and resetting the piston. All you need to do is to install it on your own roof vent home window and it instantly starts functioning. The Automatic Vent Opener functions without the usage of electricity and works with with all Palram greenhouse models only. The solar run Vent Opener will begin to open as temps 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-sensitive device that automatically opens and closes coldframe lids, greenhouse windows and also skylights. Works throughout the day and maintain a constant interior climate, something not possible to accomplish by manual adjustments.

Requires no batteries or electricity.
It could be adjusted to begin opening between 60-77°F. Fully open up at 86-90°F. Fully closed at 55°F.
Strongly recommended for every 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 definitely 5-10 years, although some can last up to 20 years.

Screw directly into polycarbonate panels, wood, or metal frames. THE TYPICAL Vent Opener can open up a hinged home window or vent weighing just as much as 32 lb. For bigger panes use the more powerful Gigavent with all metal structure, to lift up to 65 lbs.

We have actually speakinged with lots of people that utilized Greenhouse Vent Opener and also are totally satisfied.