Tube-Stor Roll File Storage Box 24 x 37-1/2 x 12 White 2/Ctn - Corrugated fiberboard with wood side panels for strength. - Depth adjusters for storing rolls up to 36" long. - Index grid inside flap. - Velcro?? fasteners. - Box Type: Portable Material(s): Corrugated Fiberboard Velcro?? Wood Strength: Basic File Size Format: Tube.