Used 385 Sq. Ft. Alfa Laval SS Plate Heat Exchanger, Model A100-BFG. Max Working Press 150 PSI @ -20 F to 230 F, Capacity 21.4 gal, Media H2O/H2O, "A" Closing Dimension 15-3/16", Based On 149 Plates, .5mm Thickness,Unit Dimension 40" Height x 19" Width x 57" Depth Qty (4) 4" Flanges On Front Of Unit, Year 1987. Serial No. 30100-69166.