Dundas Jafine 4"x25' R8 Insulated Flexible Duct

Dundas Jafine's flexible insulated duct is UL / cUL 181 listed as a class 1 air duct and bears the mark. This state of the art duct consists of a flexible helix core made of 2-ply polyester laminate and corrosion-resistant zinc-coated wire. It is surrounded by a blanket of glass fiber insulation that helps to reduce heat and cool loss as well as jacketed by a heavy-duty, fire retardant, black polyethylene vapor barrier. Flexible insulated duct can be installed in place of galvanized pipe in most applicat...