The Valterra DWV Sanitary 45° Tee Fitting is a great replacement or add on for the Drain, Waste, or Ventilation (DWV) system in your RV. Perfect for connecting two pipes into one, this fitting meets ASTM-D2661-2011 and CSA B181.1-2011 standards.• Intended for Drain, Waste, and Ventilation (DWV) Systems• Easily connect two pipes together• 3" connection hub• Durable ABS plastic construction• IAPMO listed to standards ASTM-D2661-2011 and CSA B181.1-2011 3"" connection hub Durable ABS plastic construction | Valterra DWV 45 °Tee, 3" Hub | ABS Plastic