For sale is a O and M Manufacturing Co. Compressed Air Chiller / Heat Exchanger. 6-Pass design. 450 Degrees Fahrenheit maximum air temperature. 250 Pounds maximum working pressure. Dayton 3/4 HP 3/60/230/460V, 1,725 RPM AC fan motor. Entire unit built in the USA. The grille is rather dirty. Please review the photographs to see various views of this item, as well as a shot of the OEM data plate.