4K101 – Univent – Automatic Solar Vent Opener
Automatically opens hinged vents with an expandable wax that drives a sealed piston. You can adjust the standard cylinder to start opening at any temperature between 62.6-77° F (17-25° C). An Aluminum spring pulls the vent shut as the greenhouse cools and the wax contracts. Uses “scissors” action to open vent. All parts fully guaranteed for 1 year. It will open the vent about 14″ when fully extended, and can lift a 15# vent.
A. Maximum window opening approximately 18″/45 cm
B. Maximum window opening at 86°F/30°C depending on adjustment and load
C. Suitable for greenhouse vents or cold frame lights weighing up to 15 lb/7 kg
It is recommended that your UNIVENT – or at least the cylinder – be removed from your greenhouse or cold frame for the winter.
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