Freez A Frame Clear Magnetic Pockets 5 Pack (4" x 6) For Steel surfaces, File cabinets, Lockers, Shelving, Cabinets, White Boards Easily Insert & Reuse, Strong 'Slam-Proof' Magnet Use to display : Organizational material, Quick referenced material, Email & phone # list, Schedules, Calendars, Goal charts, Procedures, Awards, Events Potential users: Manufacturing, Construction, Transportation, Warehousing, Hospitals, Schools, Police and Fire Department Durable, Clear Pocket Thin & Lightweight Construction