OB-2160 - Kahuna Outlet Box with Hammer Arrestors - UnassembledLSP Products OB 2160 Kahuna Outlet Box with Hammer Arrestors Unassembled Features Molded from high impact plastic Error proof no knockout drains Dual drain feature allows for right or left outlet option Fill stack and test directly from the box using EZ fill test cap Red cosmetic plug for unused drain Top or bottom mountable valves All boxes include innovative plastic simplex handle, converting valves to single lever PTZ1E41493