Fits 3″ x 4″ corrugated pipe, 3″ & 4″ S/D pipe and 4″ SDR35 pipe. Offset allows for adjusting inlet height, Adapters fit 9×9, 12×12, 18×18, 24×24 catch basins and all low profile series, CSA approved. for NDS products. Also fits the NDS 900 and NDS 1200 series catch basins and the NDS 1230 Low Profile catch basin.
The NDS catch basins, grates and adapters we offer are commercial grade – not the budget ones you find at your local big box hardware store.