What is the largest magnet you can produce? June 04, 2019 00:05 Updated Follow The largest magnet we can produce is 24" x 60". For further questions about large magnets, email firstname.lastname@example.org. Related articles Coil bound booklets: safety margin Are your magnets weatherproof? What surface will magnets adhere to? How thick are your magnets? Can your magnets be used on cars?