- suction nozzle for ducted fans TCB, TGT, THGT, TCBx2, TREB, EDAV, TXR - usable on the suction side of roof fans TH, CTH, CTV, HCT - for circular ducts - TAD made of galvanized steel with grey lacquer - TADF made of galvanized steel with black epoxy lacquer - dimensions correspond to flanges of ducted fans TCB, TGT - dimensions for roof fans in connection with JPA adapter on request