They fit box files and foolscap files perfectly. They have self locking bottoms so no tape required and they have handles for easy carrying. These are bigger than most of the archive boxes listed on here which makes them excellent value.
Cardboard Boxes in Moving Boxes
The Best Supplies and Packing Advice for Making Moving Less Miserable
Lineco Archival Document Storage Case - Blue Gray, 12-1/2 x 10-1/2 x 5
Lineco Museum Storage Box, Archival Quality Acid-Free Buffered Drop Front Design with Metal Edges Removable Lid, 11x14 Inches, Photo Organizer Store and Protect Prints, Gray Exterior : Photo Storage Boxes
Newspaper & Oversized Storage Boxes - Hollinger Metal Edge
Hoiwigy A4 Foldable Document Box Plastic Archive Cases with Lid, 31×24x4 cm (Pack of 4), File Folder Organizer Document Storage File Boxes for Office, School, Letter Size Paper (Blue) : Office
Moving Boxes: Every Box You Need for Moving
5 Archive Cardboard Boxes. Excellent Archive Boxes For Paper Work Books ETC.
5 x A4 Filing Archive Cardboard Storage Boxes 15x12x9
Gaylord Archival Blue Record Storage Carton 12W x 15L x 10 H (Single Box) : Electronics
As the standard in archival storage, flip-top document cases provide easy access to your important documents, photos, and similarly valued items,
Lineco Jumbo 15.5 x 12.5 x 5 wide Archival Document Storage Cases Acid Free File Organizer