Sigma Ventilation Window recommendation Reliable and long-lasting with a

Reliable and long-lasting with a 5-year warranty

and beginner-friendly

Sigma 20 (10x19

Tip: When paired with anti-dust tape

Sigma Ventilation Window recommendation Reliable and long-lasting with aPlease note: this window only fits Sigma Greenhouse models. The Planta Sigma Ventilation Window is a fantastic add on for your Sigma Greenhouse. It will efficiently increase air circulation, maintaining a comfortable temperature, which is essential for healthy plant growth and disease control. The number of suggested windows is determined by the size of the greenhouse, the environment and growing zone in which you live, and the plants you would like