Dundas Jafine ProFlex Transition Duct 4″ x 20′.
The ProFlex™ dryer duct is ideal for both gas and electric clothes dryer applications. This duct 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. This duct will not support combustion.