Use the Avantco 17819992 back grille as a direct replacement for the one that came with your Avantco ZWT-36, ZUC-36, and ZPT-36-FB Series refrigerated and freezer units! This grille protects the vital refrigeration components of your equipment, like the condenser coil, from damage that could warrant premature failure and replacement. It also helps to block dust and debris from getting inside the system. Replace a damaged grille right away to keep your unit running efficiently!