The Automatic Vent Opener was designed to automatically control the temperature and humidity levels and offer additional ventilation when needed, making gardening easier. As the surroundings in 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 drive a piston, which raises the window, as the atmosphere gets warmer, then agreements since it cools, closing with the utilization of a springtime and resetting the piston. All you need 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 utilization of electricity and works with with all Palram greenhouse models only. The solar driven Vent Opener will begin to open as temperatures inside 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 also skylights. Works during the day and Automatic Greenhouse Vent maintain a continuous interior climate, something impossible to attain by manual adjustments.

Requires simply 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 almost all our glazed season extenders since it dramatically increases plant growth.
The hydraulic cylinder comes with a 1 year warranty. The average lifetime of the cylinder can be 5-10 years, although some can last up to 20 years.

Screw straight into polycarbonate panels, wooden, or metal frames. The Standard Vent Opener can open a hinged window or vent weighing as much as 32 lb. For larger panes use the stronger Gigavent with all metallic construction, to lift up to 65 lbs.

Note from the maker: Recommended to lubricate the piston rod yearly, this will help extend the duration of the hydraulic cylinder. Avoid solid grease, as dust particles “glues” easily onto the piston rod and can harm the rubber. Also do not forget to unlock the vent in the wintertime if leaving the vent openers set up. A good weak winter sun can warmth the hydraulic cylinder sufficiently to make it start pressing 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 power. The solar vent opener may be the only solar-driven control with a quick-release mounting bracket. Simply grasp the “clutch” arm and squeeze for easy detachment. This enables vent to be fully opened for usage of the interior.