The Valterra DWV Trap Adapter is great replacement male sewer trap adapter for 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.• Designed for Drain, Waste, and Ventilation (DWV) Systems• 1-1/2" slip joint and hub• Durable ABS plastic construction• IAPMO listed to standards ASTM-D2661-2011 and CSA B181.1-2011 1-1/2"" slip joint & hub Meets ASTM-D2661-2011 & CSA B181.1-2011 standards | Valterra DWV Sewer Trap Adapter, Male, 1-1/2" Slip Joint x Hub | ABS Plastic