Spears P329 Series PVC DWV Pipe Fitting with Closet Bend, Elbow, 3" x 4" Hub Reducing closet bend elbow to connect to the mounting flange of a water closet Hub ends for connecting to male unthreaded pipes or fittings of different diameters PVC for corrosion resistance, high strength, and less weight than fittings made from metal Operating temperature range of 73 to 140 degrees F (23 to 60 degrees C) Complies with ASTM D2665 and ASTM D3311 and certified to NSF/ANSI International Standard 14 (NSF-dwv) and NSF International Uniform Plumbing Code (NSF-U.P. Code)