USAV-CBL is an intake/ exhaust louvre for large sizes, available in diameters ranging from Ø 355 to Ø 1000mm. It is made of galvanized steel and has a male duct connection and a gasket. The USAV-CBL/KBL air louvres are secured with a galvanized steel mesh. The mesh size is 12.7 x 12.7 mm. Louvres have 5 to 12 lamellae, depending on their diameter.
