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 surroundings within the greenhouse warms, the vent gradually opens to allow the right amount of air flow 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 windows, as the air gets warmer, then agreements since it cools, closing with the use of a spring and resetting the piston. All you need to do is definitely to install it on your roof vent windows and it immediately starts working. The Automatic Vent Opener works 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 ranges within your greenhouse reach 68 Greenhouse Vent Opener degrees F with full-open at 80 degrees. It installs efficiently 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 continuous interior climate, something unattainable to accomplish by manual adjustments.

Requires no batteries or electricity.
It can be adjusted to begin opening between 60-77°F. Fully open up at 86-90°F. Fully closed at 55°F.
Strongly recommended for almost all our glazed season extenders because it dramatically enhances plant growth.
The hydraulic cylinder has a 1 year warranty. The average lifetime of the cylinder is definitely 5-10 years, even though some can last up to 20 years.

Screw directly into polycarbonate panels, wooden, or metal frames. The Standard 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 metallic structure, to lift up to 65 lbs.

Note from the maker: Recommended 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 leaving the vent openers set up. Even a weak winter sunlight can warmth 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.