Alton | Automatic Louvered Window Opener RADIANT HEATING and it is primarily chosen

and it is primarily chosen by gardeners and recreators who want a true vintage look

polycarbonate roof panels Wave - Corrugated Solar Grey

Designed for a MONT 8x12 greenhouse

Heating Output: 1500w / 5118 BTU

By removing residual oxygen inside the packaging to below 0

Alton | Automatic Louvered Window Opener RADIANT HEATING and it is primarily chosenLouver 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