Double Stack IBC Tanks And Save Valuable Floor Space!16,000 lb. weight capacity accommodates up to two full IBCs.Large 52" x 52" deck allows convenient placement of all sizes and shapes of IBCs400 Gallon sump capacity meets EPA Container Storage Regulations100% Polyethylene Construction has no metal parts - rust and corrosion are things of the pastPart #: 1057 (no drain), 1058 (with drain)Dimensions: 58 3/4" x 58 3/4" x 33" (52" x 52" usable grating surface) Weight: 444 lbs. Containment Capacity: 400 gallons Uniformly Distributed Load: 16,000 lbs. Options: Outdoor PullOver Cover, separate purchase of 400-gallon sump