Alton | Automatic Louvered Window Opener RADIANT HEATING Heating Output: 1500w / 5118

Heating Output: 1500w / 5118 BTU

then use the sliding door in the outer wall section to enter and exit

designed for winds up to 80mph gusts

Each one takes two full panels on the greenhouse

Alton | Automatic Louvered Window Opener RADIANT HEATING Heating Output: 1500w / 5118Louver 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