Alton | Automatic Louvered Window Opener gable roof insulated building 4mm twin-wall polycarbonate to protect

4mm twin-wall polycarbonate to protect from direct sunlight

Color: Jet Black or Mill Finish (unpainted aluminum) - Many other custom colors are available at additional cost

Their experts will refurbish the pump as needed

The twin-wall polycarbonate acts as a double plane window keeping the cooler air in during warm months and insulating the greenhouse from cold air in the wintertime

8mm twin-wall polycarbonate end walls

Alton | Automatic Louvered Window Opener gable roof insulated building 4mm twin-wall polycarbonate to protectLouver windows help the ventilation of a greenhouse. Adding an Alton Automatic Louver Opener will help regulate the airflow automatically when temperature changes. Automatic attachment for a Louvre vent, fits most louvres. Its fully adjustable to open over a range of temperatures between 59 77 degrees F. Some drilling is required to fit. Please note that an auto louvre CANNOT fit a louver which is directly left of an a frame when you look at it