6" Plastic trench drain (BASE 150P), ductile iron grate, C classVodalands 6 Base plastic trench drain has a 6 internal width (8 external), a depth of 8, and a length of 3. 28ft (1 meter). The plastic channels can be easily connected together to create a system of any length required. This trench drain uses a C class ductile iron grate. The C load class is designed to withstand light commercial vehicle traffic. Each channel features a 90 degree connection cut out option on each side, allowing for corner turns