General description CasaFan Fitting piece Sleeve Pipe Collar is designed for quick and easy connection of fitting pieces in ventilation systems. Made from galvanized steel sheet, these collars are suitable for various ventilation system classes and air tightness classes according to Eurovent standards. Technical specifications Material: Galvanized steel sheet Suitable for ventilation system classes: I, II, III, IV Air tightness classes: A, B, C Available sizes: M 80 to M 315 Dimensions M 80: Diameter 80 mm, Length 90 mm M 100: Diameter 100 mm, Length 90 mm M 125: Diameter 125 mm, Length 90 mm M 150: Diameter 150 mm, Length 90 mm M 160: Diameter 160 mm, Length 90 mm M 200: Diameter 200 mm, Length 90 mm M 250: Diameter 250 mm, Length 135 mm M 315: Diameter 315 mm, Length 135 mm