4' x 6' x 1' Stake Wall Containment Berm

Portable Secondary Containment Berm For Drums, Tanks, Equipment And Vehicles Stake Wall Model Containment Berms feature a unique design which allows the sidewalls to collapse in either direction and spring back automatically to their upright position! Roll drums over the sidewalls, drive trucks through them, and the sidewalls always return to vertical without assistance. See how the sidewalls work No set–up required – unfold and the sidewalls automatically spring into their vertical position. Vertical sidewall supports located every 12". Each Support features a built–in "living hinge" at its base, which allows sidewalls to collapse in either direction. Collapsed sidewalls spring back automatically. Meets SPCC and EPA Container Storage Regulation 40 CFR 264.175.