AUTOMATIC VENT OPENER REPLACEMENT CYLINDER
Regular price
$59.00 USD
Regular price
Sale price
$59.00 USD
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This product is a replacement cylinder to fix an automatic vent opener for the GardenHouse greenhouse.
Automatic vent operators on the roof and base vents require no electricity or batteries. The vent operator contains a paraffin (wax) that expands when the temperature reaches about 65°F, pushing the vent open to its fully opened position at about 85°F. The operator’s springs draw each vent closed as it cools and the paraffin contracts. It is adjustable within approximately 5°F and easily detachable for manual operation.
Please allow two weeks for delivery. Only available for shipment to continental U.S.A addresses.
![AUTOMATIC VENT OPENER REPLACEMENT CYLINDER](http://store.grit.com/cdn/shop/products/10315_B-1.jpg?v=1661447274&width=1445)
![AUTOMATIC VENT OPENER REPLACEMENT CYLINDER](http://store.grit.com/cdn/shop/products/10315_A-1.jpg?v=1661447274&width=1445)