Sigma Automatic Roof Vent Planta Farmer Recommendation Manufactured from high-quality rust-proof steel

Manufactured from high-quality rust-proof steel

These innovative U-channels are designed to cap off the top and bottom of multiwall polycarbonate sheets

4 cm by 42

6mm LEXAN™ THERMOCLEAR™:

25mm 5 Wall Polycarbonate Panels

Sigma Automatic Roof Vent Planta Farmer Recommendation Manufactured from high-quality rust-proof steelPlease note: this window only fits Sigma Greenhouse models. Supercharge your Sigma Greenhouse with the Planta Sigma Automatic Roof Vent. Improve air circulation by bringing in the fresh outside breeze, keeping your plants healthy and disease free. The automatic roof vent is heat activated, which requires no electrical power or programming. This function ensures that hot air escapes during the day, preventing shrivelling or withering of your plants.