8” Plastic trench drain (BASE 200P), ductile cast iron grate ADA/Heel Proof, C ClassVodalands 8 base plastic trench drain has an 8 internal width (10 external), and a 3. 28ft (1 meter) length. Customers can choose the depth that best suits them from 3 to 8. This trench drain comes with a C class cast iron grate. The C load class is designed to withstand light commercial vehicle traffic. The plastic channels connect easily to one another to form the customers desired length of run. Each channel features a 90 degree connection option