Used 416 Sq. Ft. Baltimore Aircoil SS Plate Heat Exchanger, Ener-Changer, Plate Pack Width 13.25 in Min 13.85 in Max, Unit Dimension 63" Height x 23" Width x 48" Depth, 4" Flange Hookup, Mount Front of Unit, 2 Plate Clamp Bolts Torch Cut., Max PSI 100, Max Temp (Deg F) 200. Serial No. 90100937.