The NIBCO 4 in. x 4 in. x 3 in. ABS Sanitary Tee can be used to connect a horizontal ABS branch line to a vertical ABS drain line. ABS is lightweight, safe to handle and easy to install. ABS DWV is joined by solvent cementing or threading and can easily be connected to steel, copper, or cast iron through the use of transition fittings. Color: Black.