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 atmosphere in the greenhouse warms, the vent steadily opens to allow the correct amount of air flow into the greenhouse and closes when the temperature cools. The vent arm was designed with a steel cylinder that contains wax which expands when heated to force a piston, which raises the windowpane, as the air gets warmer, then agreements as it cools, closing with the usage of a spring and resetting the piston. All you need to do is definitely to install it on your roof vent home window and it instantly starts working. The Automatic Vent Opener operates without the utilization of electricity and is compatible with all Palram greenhouse models only. The solar run 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-sensitive device that automatically opens and closes coldframe lids, greenhouse windows and actually skylights. Works during the day and maintain a constant interior climate, something unattainable to achieve by manual adjustments.

Requires 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.
Greenhouse Vent Opener Strongly recommended for most our glazed season extenders because it dramatically increases plant growth.
The hydraulic cylinder includes a 1 year warranty. The average lifetime of the cylinder can be 5-10 years, although some can last up to twenty years.

Screw directly into polycarbonate panels, wood, or metal frames. THE TYPICAL Vent Opener can open up a hinged windowpane or vent weighing as much as 32 lb. For bigger panes use the more powerful Gigavent with all steel construction, to lift up to 65 lbs.

Note from the maker: Recommended to lubricate the piston rod yearly, this will help extend the lifetime of the hydraulic cylinder. Avoid solid grease, as dust particles “glues” quickly onto the piston rod and may damage the rubber. Also do not forget to unlock the vent in the wintertime if leaving the vent openers installed. A good 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 power. The solar vent opener is the only solar-operate control with a quick-release mounting bracket. Just grasp the “clutch” arm and squeeze for easy detachment. This allows vent to be completely opened for access to the interior.