APV Stainless Steel Plate Heat Exchanger. Model: R51. Total heat transfer surface area: 1161 Sq. Ft. (219) plates. Overall plate dimensions: 1 ft. 4-3/4 in. W x 5 ft. 1-1/8 in. H. Heat transfer surface area per plate: 1 ft. 1 in. W x 4 ft. 10-3/4 in. H. (2) Dividers: one divider has (3) 2 ½ in. S-line inlets/outlets and the other has (2) 2 ½ in. S-line inlets/outlets and (1) 2 in. S-line inlet/outlet. Inlet/outlets: (8) 3 in. S-line. Overall dimensions: 11 ft. 8 in. L x 2 ft. 10 in. W x 7 ft. 10 in. H.