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 air in the greenhouse warms, the vent steadily opens to enable the right amount of ventilation in to 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 windows, as the air gets warmer, then agreements since it cools, closing with the usage of a springtime and resetting the piston. All you need to do can be to install it on your roof vent windowpane and it immediately 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 begin to open as temperature Greenhouse Vent Opener ranges inside your greenhouse reach 68 degrees F with full-open at 80 degrees. It installs efficiently and will 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 impossible to accomplish by manual adjustments.

Requires no batteries or electricity.
It can be adjusted to start 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 includes a 1 year warranty. The common lifetime of the cylinder is definitely 5-10 years, although some can last up to twenty years.

Screw directly into polycarbonate panels, wood, or metal frames. The Standard Vent Opener can open up a hinged windowpane 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.

Note from the maker: Suggested to lubricate the piston rod yearly, this can help extend the lifetime of the hydraulic cylinder. Avoid solid grease, as dust particles “glues” very easily onto the piston rod and can harm the rubber. Also don’t forget to unlock the vent in the wintertime if departing the vent openers set up. Even a weak winter sunlight can high temperature the hydraulic cylinder sufficiently to make it start pushing the piston rod outwards.
This solar vent control will open and close vents, in your solar gem greenhouse. It features two closing springs for extra strength. The solar vent opener may be the only solar-driven control with a quick-release mounting bracket. Just grasp the “clutch” arm and squeeze for easy detachment. This allows vent to be fully opened for usage of the interior.