StoreSMART - Magnetic-Back Rigid Protectors 5-Pack - 6" x 9" - Clear Plastic Sign Holders - for refrigerator or locker Refrigerator Magnet - Top Loaders - HPP6X9M-5 Made of clear, high-impact 16 mil PVC vinyl with a 40 mil opening. Overall size: 6 7/16" x 9 1/4" Inside capacity: 6" x 9" Open on the short side. Has one strong 2" x 3" magnetic rectangle on the back.