Edgewater Parts TD48 Dryer Duct Venting 4'' x 10 Feet long with 2 Screw Clamps UL Approved For Both Gas and Electric Dryers, Contains 2 Screw Clamps UL2158A labeled and marked. Includes 2- 4" screw clamps UL Approved 10 feet of ducting Constructed of heavy duty, fire resistant, 4 ply aluminum foil laminate that encapsulates a high density, corrosion resistant wire helix Duct will not Burn Replaces old style Vinyl Ducting