Sigma™ Automatic Roof Vent Window Buy Option (Select):Buy for a Existing greenhouse Ready to Plug in

Ready to Plug in

and all parts come with a 5 Year Warranty

Model: HG6120G (Green)

works best with VC115-C thermostat controller

and includes one large Louver

Sigma™ Automatic Roof Vent Window Buy Option (Select):Buy for a Existing greenhouse Ready to Plug inDESCRIPTION The Sigma automatic ventilation window is a perfect complement to your Sigma Greenhouse. Provides heat activated ventilation and improves air circulation inside your Sigma Greenhouse. It is easy to install. You have the possibility to step less adjust the temperature where the opener begins to react to the surrounding temperature. This opener can not be closed once it is opened. This window only work for Planta Sigma greenhouse. BUYING