Rubbermaid Stak-A-File Magnetic Pocket, Letter Size, Clear (E13514) Stak-A-File magnetic letter-size pocket with two super-grip magnets to attach to metal surfaces. 13 3/8w x 4 1/8d x 7 1/8h. Single plastic, letter-size pocket with two super-grip magnets to attach to metal surfaces. Sold As A Single Unit.