Grandio Greenhouses Automatic Greenhouse Roof Vent Opener by Grandio Greenhouses at Sun Light Village. MPN: GRA-AUTO. Hurry! Limited time offer. Offer valid only while supplies last. Automatically opens and closes the roof vent/window when temperature changes. The opener has a metal cylinder containing a mineral which expands when
Product Description & Reviews
Automatically opens and closes the roof vent/window when temperature changes. The opener has a metal cylinder containing a mineral which expands when heated. This pushes a piston that opens the vent. As the temperature cools, the mineral shrinks and a spring closes the vent and resets the piston. The opening and closing of the vent is gradual allowing just the right amount of air flow for cooling.
Features & Highlights
- Opens roof vent automatically as temperature warms for air circulation and heat relief, Closes when temperature cools
- Starting opening point: 75° F to 80° F
- Solar powered, heat activated
- No electricity needed
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mpn: Fheaven, ean: 0655981996127,
** Description * * * * Including fittings & installation manual * * Please ensure your greenhouse window can be opened freely by at least 45cm (18") Do not apply excessive loads by locking or covering window * * Do not dismantle the cylinder * *The o...
Make sure that your greenhouse window opens normallyAdjustment : Turning the cylinder can make your automatic vent start opening at different temperature , Turning clockwise can make higher/ earlier opening. Turning anticlockwise can make lower/ late...