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Grandio Automatic Window Opener.

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.

Window Opener:

$79.00

:
Availability: In stock and ready to ship

Window Opener 2 Pack:

$149.00

:
Availability: In stock and ready to ship

Window Opener 4 Pack:

$290.00

:
Availability: In stock and ready to ship

Replacement Cylinder:

$20.00

:
Availability: In stock and ready to ship
  • Shipping Weight: 1 lbs

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