Sigma 3 x 1.4 ft. Automatic Roof Vent brand_sunpack This 3mm predator attacks and

This 3mm predator attacks and kills all mobile stages of thrips (larvae and adults)

Available Phosphate (P205)

The Barnstormer is the only fan on the market with an Exclusive Open Front Feature

High PAR light transmission

providing insulation to your soil

Sigma 3 x 1.4 ft. Automatic Roof Vent brand_sunpack This 3mm predator attacks andSupercharge your Sigma Greenhouse with the 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 shriveling or withering of your plants. Sigma Automatic Roof Vent Features: Made from galvanized steel and