4 in. X 8 Ft. Heavy-Duty Semi-Rigid Aluminum Duct

The 4 in. x 8 ft. Heavy-duty Semi-Rigid Aluminum Duct is UL2158A listed and marked for safe dryer venting. It is ideal when UL all aluminum duct is required by code in some gas and electric dryer applications. This duct is totally noncombustible and has a maximum operating temperature of 435 degree F.