This Avantco A Plus 4471265231 PVC drain is a direct replacement for the one that comes standard with AP-23R and AP-49R reach-in refrigerators. The drain is an important part of your refrigeration equipment, ensuring that condensation and run-off water that forms as part of normal operation is removed from the unit. A clogged or cracked drain can allow water to sit inside the unit, fouling internal components or promoting the growth of mold, so be sure to replace it promptly if you notice any damage.