Basic Strength?For light-duty stacking and storing Pull out binder for reference, slide into case for storage. Fiberboard with metal arch rings (2-3/4" c. to c.). Adjustable compressor. Sleeve & drawer lid closure. A minimum of 50% post-consumer content. Inside dimensions listed below (w x h x d). Capacity Range [Max]: 3 1/8"; Sheet Capacity: 700; Color(s): Kraft; Binder Sheet Size: 8 1/2 x 11.