This Avantco 18934364 evaporator coil is a direct replacement for the one that comes standard on BMAC-26HC and WMAC-26HC air curtain merchandisers. The evaporator coil is a vital part of your equipment's refrigeration system, as it is the part of the system where the refrigerant absorbs heat and creates the cold air that is keeping your products at a cool temperature. If the evaporator coil in your unit is broken, be sure to fix it promptly.