Constructed of vinyl polyester with internal steel-reinforced wire hoop. Diameter is 8" with external wear strips and 6" long attachment cuffs. Maximum temperature rating 180° F. Both standard and conductive ventilation ducting is available in a variety of lengths. Standard ducting features 8 3/8" dia. bell cuff and adjustable belt straps on both ends. Conductive ducting features ground wires on each end of helix. Duct carrier features polyethylene construction with a large carry handle, snap-lock lid and holds 50' of 8" ducting.