NDS universal adapters are used to connect 3 or 4 in pipe to 9, 12, 18 and 24 in catch basin series. Features one end fits into 9, 12, 18 and 24 in catch basin series or #930, #1230, #1830 and #2410 adapters. Use with 24 in catch basin series also requires #2410 one end fits 3 and 4 in sewer and drain pipe, 3 and 4 in corrugated pipe, 3 and 4 in triple wall pipe, 4 in PVC SCH 40 pipe.