This Avantco 17819988 back grille is a direct replacement for the one that came with your Avantco worktop or undercounter freezer. This grille protects the refrigeration system components from damage while allowing proper airflow. Use it to replace a worn or broken part to keep your unit operating efficiently. It's compatible with Avantco ZWT-27 and ZUC-27 Series 27" worktop and undercounter freezers.