The Palram Automatic Roof Vent Opener was designed to automatically control the temperature in all Palram 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 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.
- 2-3/4 in. x 15-3/4 in. x 2 in.
- 1 year limited warranty
Note: This product may require up to 2 additional days for order processing prior to shipping