4 in. x 50 ft. Flexible Aluminum Foil Duct UL181 Listed and Marked

This 4 in. x 50 ft. ProFlex aluminum foil dryer transition duct is ideal for both gas and electric clothes dryer applications. This duct is UL2158A listed and marked for safe dryer venting and is constructed of heavy duty, fire resistant, 4-ply aluminum foil laminate that encapsulates a high density, corrosion resistant wire helix. This duct will not support combustion.|Ideal for both gas and electric dryer applications|Constructed of heavy duty aluminum foil laminate|Will not support combustion|Corrosion resistant wire helix