Fernco corrugated couplings are suitable for connecting lead, copper & steel corrugated pipes to PVC tubing for gravity flow sewer & stormwater systems. These couplings feature PVC construction for resisting damage against chemicals, sewer gases & ultraviolet rays while preventing fungus growth. They come with 300 Series, stainless steel clamps for minimising installation time while providing secure positive sealing. Choose from a wide variety of these couplings, available for 3 x 3 & 4 x 4 inch pipe sizes.