Master Magnetics ZGPHP3.5x5MW-CX25 Flexible Magnetic Envelopes - Clear Plastic with Magnetic Backing, Width 9 cm, Height 5 cm, White Background (Pack of 25)

A quick and easy solution to post and protect photos, signs, labels and other 3.5 inch x 5 inch paper documents. Magnetically attracts to metal Doors, shelves, File cabinets, refrigerators and other interior ferrous metal surfaces. Utilize in homes, offices, warehouses, production areas and classrooms. Magnet requires direct contact with a minimum 3.5 inch x 5 inch flat area, ferrous steel surface for maximum hold and works best when applied above 60 Degrees Fahrenheit or 15.56 degree Celsius. For best results: allow magnet to REACH room temperature before applying to surface. Magnet withstands temperatures from 0-150 Degrees Fahrenheit or 0-65.56 Celsius. Overall dimensions are approximately 3.875 inch height x 5.25 inch width.