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continuous water flow
creating an inviting
Year-Round Weather Resistance: Withstands winds up to 75mph and 16
This greenhouse requires little maintenance
Sigma™ Manual Roof Vent Window Pergola Cover continuous water flowDESCRIPTION The Sigma ventilation window is a perfect complement to your Sigma Greenhouse. Provides ample ventilation and improves air circulation inside your Sigma Greenhouse. It is easy to install. The Sigma greenhouse build in 2 manual ventilation windows on each side of the door. For maximum efficiency, we recommend that you install an extra ventilation window on each side of the greenhouse. Only fits Sigma greenhouse models. This window can be
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