Industry standard L-bracket berms are durable, dependable, and proven. Sidewalls are held in place by an aluminum bracket that can be oriented towards or away from the sump. They are available in a wide range of standard sizes, and fold flat for easy shipping, storage, and transportation. Place a standard wooden pallet with drums directly into this convenient size.Easy to setupCustom sizes availableLow-profile sidewallOptional trickle filter/shut-off valvePart #: 48-551-ASDimensions: 5' x 5' x 1'Weight: 22 lbsSump Capacity: 187 gal