Palram-Canopia Automatic Roof Vent Opener for Most Canopia Greenhouses height_67-56 Protective soft-holding steel hooks

Protective soft-holding steel hooks

This system is easy to install

The Deep Utility Hooks keep your extension cords and hoses untangled and easily accessible

Smooth operating full extension ball-bearing drawer glides

5" Color White and Grey Weight 274

Palram-Canopia Automatic Roof Vent Opener for Most Canopia Greenhouses height_67-56 Protective soft-holding steel hooksThe Automatic Vent Opener was 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