Modular organizer storage boxes are a versatile choice for all storage needs. Sturdy construction. Medium-duty stacking strength for moderate use with or without shelving. Fast and easy construction. Rolled edges provide a more finished look, for busy offices with a need to maintain a professional appearance. X-Large Organizer. Box Type: Stackable General Materials Storage; Strength: Medium-Duty; File Size Format: X-Large; Width: 12.75".