What is a Commercial Fridge? A commercial fridge and freezer is a unit that is typically rated to an ambient temperature of greater than 25 degrees or greater and is designed for a door opening every 3 minutes. These units also have commercial heavy grade castors or adjustable feet that are 150 mm or higher. It is also important when you decide to buy a commercial fridge that any glass is double glazed and or heated so that your products do not get spoiled and keeping your running costs down.