PVC donwpipe for the connection of bituminous roofing with rainwater drains.
CONCEPT is an innovative idea for exhaust nozzles. Made with a special thermoplastic rubber compound, resistant to low temperatures (cold flexibility -40 ° C), it has the circular sector of the flange equipped with through holes. The holes allow the perfect fusion of the membranes placed above and below the flange. The circular sector of the flange is however equipped with dovetail channels for a perfect coupling of the membrane. Straight shank with two or three pairs of anti-reflux flaps, depending on the two available sizes (250 mm or 400 mm).
