These flexible walls rise on their own when fluid enters the berm and lie flat when it is empty, so vehicles and equipment can drive over the edge without ramps. Use it at fueling areas, vehicle maintenance bays and equipment service pads.

Inside it measures 15 ft x 20 ft with 12-inch walls and holds up to 2,244 gallons. It is made of Copolymer-2000, which stands up to fuels, oils, solvents and many aggressive chemicals. It weighs about 184 lb. It helps facilities meet EPA 40 CFR 112.7 and SPCC secondary containment rules.

Specifications