Marketing InformationIdeal for plumbing in tight areas, the Water-Tite 45 deg closet flange comes with an adjustable ring (available in either plastic or stainless steel) that offers easy alignment of bolts and screws, speeding up installation. Choose from models that come with or without knockouts to fit either ABS or PVC systems to suit your specific installation needs. This closet flange fits securely over the top of 3 in or inside of 4 in Schedule 40 DWV (drain, waste, and vent) pipe.