Product Features •Uses air for cooling/heating •Integral finned tube •Various design kinds & supplies •Fully customizable •ASME available Customary Xchange’s line of Heavy Duty Coils uses an aluminum extruded, integral finned tube with header development in an outer casing. The integrally finned tube affords a longer life than different varieties of finned tubes with no chance of the fins loosening, no lack of heat transfer and no corrosion on the fin to tube interface promoting longer working life. Integral aluminum fins with variety of materials accessible for inside tubes and other elements. ASME Code development and stamp obtainable. Double tube available for freezing resistance when using sub-freezing air. Functions: heating or cooling air utilizing steam or a wide range of liquids.