Palram - Canopia Automatic Roof Vent Opener for Most Canopia Greenhouses

The Automatic Vent Opener is designed to automatically control the temperature in Palram - Canopia Greenhouses. 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 expand to push a piston, which raises the window, as the air gets warmer then contracts as it cools, closing with the use of a spring. The Automatic Vent Opener operates without the use of electricity. Compatible with Hybrid, Mythos, Harmony, Snap & Grow, Balance, Octave, Essence, Chalet, Americana, Oasis, Glory, and Bella