IPEX Canplas SDR 35 90 Degree 6 In. PVC Sewer and Drain Sanitary Elbow (1/4 Bend)Used when a long turn 90 degree change of direction is needed. BENEFITS compared to other sewer and drain piping systems: Costs less to operate Greater hydraulic efficiency Life cycle (50+ years) APPLICATIONS: Building sanitary, storm and landscape drainage Foundation perimeter drains Septic field installations Unless otherwise noted, products are approved listed by CSA International, NSF and IAPMO to standards that include: CSA B181. 2, IAPMO IS5,