Sigma Automatic Roof Vent Polycarbonate Sheets including – sturdy door &

including – sturdy door & window handles

promoting an optimal growing environment

this unique design is completely customizable

efficient environment tailored for commercial agriculture

Tip: Ensure that the 'longer leg' of both profiles is positioned on the inside of the sheet

Sigma Automatic Roof Vent Polycarbonate Sheets including – sturdy door &Please 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