A filer is disclosed which has front panel and rear panel defining a storage compartment therebetween, the storage compartment having a width. The filer includes a cover coupled to the rear panel and releasably attachable to the front panel to generally cover or seal the storage compartment. A distal portion of the cover has a width that is about equal to or smaller than the width of the storage compartment to allow the distal portion of the front cover to be received in the storage compartment.