The Bankers Box Systematic Basic-duty storage box features an attached flip-top lid—prevents lost or damaged lids. Basic-duty with standard set-up construction for moderate stacking or use with shelving. Store important materials, or use to store other household or office items. Perfect for use in the office, home office, school, or anywhere you would like to store important materials and items. Box Type: Stackable File Storage; Strength: Medium-Duty; File Size Format: Letter/Legal; Inner Width: 12".