Indoor Magnets 30 Mil Round Corners will help you to convert your customer's refrigerators, dishwashers, and home appliances into your advertising space. With a thickness of 30 Mil, these custom rectangle and square magnets can be easily used for keeping bills, lists and photos organized in refrigerators doors and metal shelves. Order these printable magnets right now to get our free digital proofs, free full-color printing and free digital design assistance offers.