Connect a branch line into a vertical ABS drain line with the NIBCO 4 in. ABS DWV Hub x Hub x Hub Sanitary Tee. The tee is designed for use with non-pressurized sanitary systems. 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.