16x16 Plastic NEO catch basin (NEO 400-CBP), galvanized fillable slot, C ClassVodaland's 16x16 BASE plastic NEO catch basin is a cone shaped basin with a 16" width, length, and height. This catch basin comes with a C class galvanized steel fillable slot that adds an additional 5" in height. The C load class is designed to withstand vehicle traffic. The basin includes a pipe connection adapter and are available in diameters ranging from 2 1 2, 4" and 6 (see drawing for details). Alternately, you can use the connection cut outs