72” commercial sandwich refrigerators hold multiple trays of prepared food, keeping them at an even, cold temperature for extended lengths of time. Most 72” commercial sandwich refrigerators have dual doors, allowing more efficient access to storage and better preservation of the internal temperature. Most units also come with an adjustable thermostat that can be set to the desired temperature and a door alarm that will sound if the door is opened for too long. Many commercial refrigerators have additional features such as doors that lift or slide open, shelves that adjust in height, lighting, and doors that open from the side. Depending on the size and intended application of the commercial refrigerator, the capacity will vary. They are usually made of stainless steel, aluminum, or a combination. Stainless steel is the most common material used in the construction of commercial refrigerators due to its durability and resistance to corrosion. It also stays cooler than aluminum, which is a consideration for businesses where the equipment is near employees.