20 mil - When you need something completely unique to your brand, look no further than this Custom Magnet! Simply add your company name, logo or marketing message to have your masterpiece created. Magnets are a practical and inexpensive way to lure in potential customers. The thin magnet will measure between 7.1 and 9 square inches and is completely customizable and affordable. It's a proven marketing tool that will leave a lasting impression by keeping your business posted on refrigerators in homes and offices so that you're never forgotten!