Stainless Steel Rectangular Surge Tank with removable coil. Estimated capacity: 1000 gallons. Inside dimensions: 73 in. L x 71-1/2 in. W x 47-1/2 in. H. Stainless Steel Spiral Coils- 12 Gallon, coil dimensions (one turn): 1-1/2 in. dia. x 106 in. L, number of spirals: 16. Inlets: (1) 3/4 in. dia. media port, (2) 1-1/2 in. dia. FNPT, (2) 4 in. dia. ports. Outlets: (1) 1-1/2 in. dia. media port, (1) 2 in. dia. FNPT ball valve, (1) 2 in. dia. PVC. Overall dimensions: 84 in. L x 82 in. W x 60 in. H.