The Automatic Vent Opener was designed 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 gradually opens to enable the right amount of ventilation into the greenhouse and closes when the temperature cools. The vent arm was designed with a metallic cylinder containing wax which expands when heated to drive a piston, which raises the windowpane, as the air flow 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 home window and it automatically starts operating. The Automatic Vent Opener operates without the usage of electricity and works with with all Palram greenhouse versions only. The solar run Vent Opener will start to open as temperatures inside 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-delicate device that automatically opens and closes coldframe lids, greenhouse windows and also skylights. Works during the day and maintain a constant interior climate, something impossible to attain 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 most our glazed season extenders since it dramatically boosts plant growth.
The hydraulic cylinder has a 1 year warranty. The common lifetime of the cylinder is definitely 5-10 years, even though some can last up to twenty years.

Screw directly into polycarbonate panels, wooden, or metal frames. The Standard Vent Opener can open up a hinged windows or vent weighing just as much as 32 lb. For larger panes use the more powerful Gigavent with all metal structure, to lift up to 65 lbs.

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