Sigma Automatic Roof Vent Terra providing temperature stability for your

providing temperature stability for your plants

switch to fan-only mode to keep air circulating evenly — a key step in preventing mold and hotspots around your plants

Complete set

6mm Double-Wall Polycarbonate Panels

800 ft³ per hour

Sigma Automatic Roof Vent Terra providing temperature stability for yourPlease 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