b'Now available in 6"12" DR 18 pipe Summer 2021: 14"24" DR18 & DR25CSAIntegral BellIncreases installation speed Certified No CouplingReduces installation steps PerformanceYears of proven service in the US NAPCO_OSWCA_Directory_HalfPageAd_C900-RJIB_Jan2021_TOL.indd 1 12/21/2020 12:30:06 PM H 2 OSWCAWinter 2020/202117'