This Avantco 17810135HC defrost element is a direct replacement for the one that came with your Avantco merchandiser freezer. The defrost element is a vital part of the refrigeration system, powering your unit's defrost cycle to prevent performance-killing frost buildup. If your defrost element is broken or needs replaced, be sure to do so promptly so that your freezer always operates at peak efficiency. It's compatible with Avantco GDC-9F series merchandiser freezers.