The Valterra DWV Elbow Fitting is designed to be installed with the Drain, Waste, or Ventilation (DWV) system in your RV. Built with durable ABS plastic, this fitting meets ASTM-D2661-2011 and CSA B181.1-2011 standards.• Intended for Drain, Waste, and Ventilation (DWV) Systems• 90° angled elbow fitting• 1-1/2" diameter• Durable ABS plastic construction• IAPMO listed to standards ASTM-D2661-2011 and CSA B181.1-2011 90° elbow fitting with 1-1/2"" diameter Meets ASTM-D2661-2011 & CSA B181.1-2011 standards | Valterra DWV 90 °Street Elbow RV Sewer Fitting, 1-1/2" Spigot x Hub | ABS Plastic