12x12 Plastic NEO catch basin (NEO 300-CBP), ductile cast iron grate, C ClassVodaland's 12x12 plastic NEO catch basin is a coned shaped basin with a 12" width, length, and height. This catch basin comes with a C class ductile cast iron grate. The C load class is designed to withstand all residential vehicles and even light commercial traffic. The basin includes a pipe connection adapter available in diameters of 2 1 2 and 4 (see drawing for details). Alternately, you can use the connection cut outs on the side and bottom