Sigma Automatic Ventilation Window ministar recommendation we suggest that you install

we suggest that you install an even number of ventilation windows on each side of the greenhouse

Price per sheet: $110

and long-lasting with a 10-year warranty

BASELINE MODEL

this feature can also be used in conjunction with the heater

Sigma Automatic Ventilation Window ministar recommendation we suggest that you installPlease 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