Everbilt 4 in. x 25 ft. Flexible Foil Duct

This 4 in. x 25 ft. Dryer Vent Duct is ideal for both gas and electric dryer application. It is constructed of heavy-duty, fire resistant, 4-ply aluminum foil laminate that encapsulates a high density, corrosion resistant wire helix. This forms an air tight and easy to use air duct.Constructed of heavy-duty, fire resistant, aluminum foil laminateConstructed with a corrosion resistant, wire helixDuct is airtightWill not support combustionNote: per UL2158A only ducts 8 or less can be UL markedHow to Clean a Dryer Duct