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 air inside the greenhouse warms, the vent gradually opens to enable the right amount of air flow into the greenhouse and closes when the temperature cools. The vent arm was designed with a steel cylinder containing wax which expands when heated to push a piston, which raises the home window, as the atmosphere gets warmer, then contracts as it 
cools, closing with the use of a spring and resetting the piston. All you need to do is usually to install it on your own roof vent window and it automatically starts functioning. The Automatic Vent Opener functions without the utilization of electricity and works with with all Palram greenhouse versions 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 even skylights. Works throughout the day and maintain a constant interior climate, something difficult to attain by manual adjustments.
Requires simply no batteries or electricity.
It could be adjusted to begin opening between 60-77°F. Fully open 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 has a 1 year warranty. The common duration of the cylinder is certainly 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 building, to lift up to 65 lbs.
Note from the manufacturer: Recommended to lubricate the piston rod yearly, this can help extend the lifetime of the hydraulic cylinder. Avoid solid grease, as dirt particles “glues” quickly onto the piston rod and may harm the rubber. Also don’t forget to unlock the vent in the wintertime if leaving the vent openers installed. A good weak winter sun can high temperature the hydraulic cylinder sufficiently to create 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-powered control with a quick-release mounting bracket. Just grasp the “clutch” arm and squeeze for easy detachment. This enables vent to be fully opened for Automatic Greenhouse Vent access to the interior.