Sigma Automatic Roof Vent Polycarbonate Sheets this unique design is completely

this unique design is completely customizable

• 32 mesh cups

efficient environment tailored for commercial agriculture

96in x 149

Sigma Automatic Roof Vent Polycarbonate Sheets this unique design is completelyPlease note: this window only fits Sigma Greenhouse models. Supercharge your Sigma Greenhouse with the Planta Sigma Automatic Ventilation Window. Improve air circulation by bringing in the fresh outside breeze, keeping your plants healthy and disease free. The automatic ventilation window is heat activated, which requires no electrical power or programming. This function ensures that hot air escapes during the day, preventing shrivelling or withering