The ADA24R is a 24-inch ADA undercounter refrigerator with a capacity of 5.3 cubic feet, which equates to storage of more than 7-1/2 cases of 12 oz. cans. All ADA24R models are ENERGY STAR rated; and the solid door model is Consortium for Energy Efficiency (CEE) Tier 3 rated, which at more than 30 percent higher efficiency than the federal standard, it is the highest energy efficiency rating available.