Kusel Plate Heat Exchanger. Number of stainless steel plates: 90. Heating surface area: approx. 208.125 sq. ft. Inlets: (1) 2 in. dia. threaded fitting (product), (1) 2 in. dia. threaded fitting (hot water). Outlets: (1) 2 in. dia. threaded fitting (product), (1) 2 in. dia. threaded fitting (cold water). Overall dimensions: 72 in. L x 30 in. W x 62-1/2 in. H.