12x12 Plastic NEO catch basin (NEO 300-CBP), galvanized steel grateVodaland's 12x12 Plastic NEO catch basin is a cone shaped basin with a 12" width, length, and height. This catch basin comes with an A class galvanized steel grate. The A load class is designed to withstand pedestrian 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 directly with various sizes from 2 1 2", 4"