Thermal Transfer BPSW-50-20X10 50-Plate Brazed Heat Exchanger B120THx50/1P-SC-M

In good used condition.
50 plate stainless.  
1-1/2" ports.  2 NPT x 2 SAE.
20-1/2"L x 9-1/2"W x 5-1/8"D