 Rion Greenhouse Automatic Window Opener
Automatically opens and closes the roof vent/window or the louver 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.
| Automatic Window Opener |
Rion Automatic Roof Window Opener
Fits Roof Windows/Vents for all Professional Series GH44, GH46, GH48, GH4-10, and GH4-12 greenhouses, all Green Giant greenhouses, and all Prestige greenhouses.
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$79.99
Free Shipping |
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Rion Automatic Louver Window Opener
Fits Louver Windows for all Professional Series GH44, GH46, GH48, GH4-10, and GH4-12 greenhouses, all Green Giant greenhouses, and all Prestige greenhouses. |
$79.99
Free Shipping |
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*Shipping costs are calculated for orders shipped within the lower 48 states. If order is being shipped to anywhere other than the lower 48 states, additional shipping costs may apply. Contact our Customer Service Help Desk for questions. |
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