Sigma Ventilation Window recommendation 8mm LEXAN™ THERMOCLEAR™ 15:

8mm LEXAN™ THERMOCLEAR™ 15:

3' width provides easy access to the plants in the garden bed

18kg / 7lbs

and beginner-friendly

virtually unbreakable sheet

Sigma Ventilation Window recommendation 8mm LEXAN™ THERMOCLEAR™ 15:Please 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