PVC/Aluminum Duct Flange is for assemble of Pre-insulated Duct, including straight air duct connection, and tee connection, air grille & diffuser connection (h, F, U flange).
PVC/Aluminum Duct Flange is for assemble of Pre-insulated Duct, including straight air duct connection, and tee connection, air grille & diffuser connection (h, F, U flange).