As the warm air escapes through the roof vents, the Louvre window can ensure fresh air circulates in your greenhouse.
6 blade louvre available in black, green or aluminium finishes. Increases airflow through the greenhouse.
 
Fits all Halls and Halls Cotswold greenhouses (formerly Eden) apart from for the Halls Popular 6ft width and Halls Supreme 6ft width which use the 5 blade louvre.