This standard applies to the following manufacturers' standard catalog Commercial Refrigerated Display Merchandisers and Storage Cabinets, provided that the cases are equipped and designed to work with electrically driven, direct expansion type systems: a. Self-contained and Remote Commercial Refrigerated Display Merchandisers and Storage Cabinets b. Open and Closed Commercial Refrigerated Display Merchandisers c. Service and Self-service Commercial Refrigerated Display Merchandisers.