This Avantco 18934785 wicking kit is a direct replacement for the one that came with your Avantco air curtain merchandiser. Use it to replace a worn or broken part to keep your unit operating efficiently. It sits in the condensate drain pan and is compatible with Avantco BVAC-28HC, BVAC-36HC, WVAC-28HC, and WVAC-36HC air curtain merchandisers.