Grandio Greenhouse Roof Vent

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.

Grandio Ascent Roof Window Vent

Additional Grandio Ascent Roof Window Vents will fit as listed:

Not available for 8x8 Ascent Greenhouses as the roof vents may not be placed next to each other.

1 additional - for 8x12 Ascent Greenhouses

2 additional - for 8x16 Ascent Greenhouses

3 additional - for 8x20 Ascent Greenhouses

4 additional - for 8x24 Ascent Greenhouses

* Does not include window panel.

Grandio Elite Roof Window Vent

Additional Grandio Elite Roof Window Vents will fit as listed:

Not available for 8x8 Elite Greenhouses as the roof vents may not be placed next to each other.

1 additional - for 8x12 Elite Greenhouses

2 additional - for 8x16 Elite Greenhouses

3 additional - for 8x20 Elite Greenhouses

4 additional - for 8x24 Elite Greenhouses

* Does not include window panel.