This Avantco A Plus 44712189576 evaporator coil is a direct replacement for the one that came with AP-23R reach-ins. The evaporator coil is a vital part of your unit's refrigeration system, working with the other components to help your unit dissipate heat and keep the cabinet set to the right temperature. A broken or malfunctioning coil can prevent your unit from maintaining specifications and cause strain on other components, so be sure to replace it promptly.