NIBCO 3 in. x 4 in. PVC DWV Hub Offset Closet Flange

The NIBCO 3 in. x 4 in. PVC DWV Offset Closet Flange Hub is used for non pressurized sanitary systems. The sanitary drainage and vent piping are installed to remove waste water and water borne wastes from the plumbing fixtures and appliances as well as provide a circulation of air within the drainage piping.