NDS 4 in. PVC Hub x Hub x Hub 3-way Sanitary Tee is used to connect a branch line in the installation of a non-pressurized drainage and sewer piping system. Connects to 4 in. sewer and drain (S and D) pipe. PVC construction is durable, lightweight, economical and resistant to corrosion and chemicals. Suitable for use with sewer and drain pipe.