Use this Avantco 17810470 heater blanket as a direct replacement for the original part that came with your Avantco merchandiser freezer. It is a vital part of your unit's drain system, working with the other components to help your unit remove condensation from the evaporator drain pan. A broken drain pan heater can prevent your unit from maintaining specifications and cause strain on other components, so be sure to replace it promptly. It's compatible with Avantco GDC-9F-HC merchandiser freezers, and it has 50 watts of power and requires a 115V electrical connection for operation.