6 ROUND GRATE - Use with pipe and connecting fittings where a drain bis not needed, or where space doesnt allow the use of a basin. Use with 6 Corrugated singlewall pipe, 6 Leach pipe or 6 PVC pipe. Manufactured using rigid, lightweight polyolefins, Drain Tech TM basins and channels are easy to install, long lasting and require little maintenance. For shallow applications, DrainTech TM low-profile drain are recommended.