FastFold Flip Top File Storage Box Letter/Legal Woodgrain 12/Ctn - Attached flip-top lid prevents lost or damaged lids. - Medium duty stacking strength for use with or without shelving. - FastFold?? quick and easy assembly. - Reinforced tear-resistant hand holes make box comfortable to carry. - Box Type: FastFold?? Material(s): 2 Ply Bottom 2 Ply Side 3 Ply End Strength: Medium-Duty File Size Format: Letter/Legal.