Palram-Canopia Automatic Roof Vent Opener for Prestige, Grand/Hobby Gardener and EcoGrow Greenhouses workbenchwithdrawers PRO Series Black 28 in

PRO Series Black 28 in

Featured Privacy Walls: This pergola is designed with back solid wood privacy screens

you will have created your new favorite outdoor structure

high-quality (yet lightweight) aluminum frame is powder coated in white

Manufacturer: NewAge Outdoor Kitchens Manufacturer SKU: 71668 Manufacturer UPC: 676065716684 Limited Lifetime Warranty

Palram-Canopia Automatic Roof Vent Opener for Prestige, Grand/Hobby Gardener and EcoGrow Greenhouses workbenchwithdrawers PRO Series Black 28 inThe Automatic Vent Opener was designed to automatically control the temperature in your Greenhouse. As the air inside the greenhouse warms, the vent gradually opens to allow the correct amount of air flow into the greenhouse and closes when the optimal temperature is reached. The vent arm was designed with the use of natural wax that expands as the air gets warmer, to push a piston which raises the window, then contracts as it cools, closing with the