Palram - Canopia | Automatic Louvered Window Opener for Nature Series (Mythos, Hybrid, Essence), Americana greenhouses ROOF VENT OPENER Size is approx

Size is approx

Virtually unbreakable 4 mm twin-wall polycarbonate panels block up to 99

At 7' 6" tall at the peak

One set covers all sides of your Palermo or Milano Gazebo

Palram - Canopia | Automatic Louvered Window Opener for Nature Series (Mythos, Hybrid, Essence), Americana greenhouses ROOF VENT OPENER Size is approxThe Automatic Louvered Window Opener is designed to automatically control the temperature and provide additional ventilation in all Palram Canopia Greenhouses. As the air inside the greenhouse warms, the vent gradually opens to allow the correct amount of airflow into the greenhouse and closes when the optimal temperature is reached. The vent arm was designed with the use of natural minerals that expand with heat to push a piston, which raises the