The Automatic Vent Opener was made to automatically control the temperature and humidity amounts and offer additional ventilation when needed, making gardening easier. As the surroundings within the greenhouse warms, the vent gradually opens to enable the correct Automatic Greenhouse Vent amount of ventilation into the greenhouse and closes when the temperature cools. The vent arm was made with a steel cylinder that contains wax which expands when heated to press a piston, which raises the window, as the atmosphere gets warmer, then contracts since it cools, closing with the use of a springtime and resetting the piston. All you need to do is certainly to install it on your own roof vent screen and it automatically starts functioning. The Automatic Vent Opener functions without the utilization of electricity and is compatible with all Palram greenhouse versions only. The solar powered Vent Opener will begin to open as temperature ranges 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 even skylights. Works during the day and maintain a continuous interior climate, something extremely hard to achieve by manual adjustments.
Requires 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 all our glazed season extenders because it dramatically boosts plant growth.
The hydraulic cylinder includes a 1 year warranty. The common lifetime of the cylinder can be 5-10 years, even though some can last up to 20 years.
Screw straight into polycarbonate panels, wood, or metal frames. THE TYPICAL Vent Opener can open a hinged home window or vent weighing as much as 32 lb. For larger panes use the stronger Gigavent with all steel structure, to lift up to 65 
lbs.
Note from the manufacturer: Recommended to lubricate the piston rod annual, this can help extend the duration of the hydraulic cylinder. Avoid solid grease, as dust particles “glues” quickly onto the piston rod and may harm the rubber. Also do not forget to unlock the vent in the wintertime if departing the vent openers set up. A good weak winter sunlight can high temperature 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 strength. The solar vent opener is the only solar-operate control with a quick-release mounting bracket. Simply grasp the “clutch” arm and squeeze for easy detachment. This allows vent to be completely opened for usage of the interior.
