MFX48X Semi-Rigid Duct, 4 in Dia, 8 ft L, Aluminum, 10/PK

the semi-rigid aluminum duct is ideal for applications where code requires an all aluminum product. This duct is totally non-combustible with a maximum operating temperature of 435 deg F. DUNDAS-JAFINE is now pleased to offer a new UL Listed and Marked version of the semi-rigid aluminum duct. This particular duct is UL2158A listed and marked and can be used in applications where the dryer manufacturer calls for a UL version of an all aluminum product. The UL duct is thicker than the standard version and new manufacturing technology incorporated into the duct allows for easy rotation and therefore more durable handling of the duct by the contractor.