This Avantco 18934784 ABS drain assembly is a direct replacement for the one that came standard on your Avantco refrigerated air curtain merchandiser. The drain assembly is a vital part of your unit's refrigeration system, working to drain out excess condensation and moisture so that it does not accumulate in your equipment. Use it to fix a broken one easily. It's compatible with Avantco BVAC-28, BVAC-36, and BVAC-46 and WVAC-28, WVAC-36, and WVAC-46 refrigerated air curtain merchandisers.