DURABLE - These medium-duty strong storage boxes feature double corrugated wall construction to end panels and base for secure storage of all your documents ASSEMBLE WITH SPEED - Designed to save you time, the FastFold automatic assembly means you can build your archive boxes quickly and easily in as little as 4 seconds - saving you time over traditional manual storage boxes IDEAL FOR STORING DOCUMENTS - Built for compatibility, these archive boxes accommodate A4 or foolscap/folio/legal transfer box files, lever arch files and suspension files - its oversized deep lid means they can be used to store A4 or Foolscap suspension files STACKABLE - Strength in engineering and high quality materials ensures that your system storage boxes can be stacked up to four units high, using space more efficiently and keeping you more organised COMFORTABLE TO CARRY - These storage boxes provide optional reinforced carry handles, making the cardboard storage boxes more comfortable to carry INTERNAL DIMENSIONS - The internal dimensions of this system storage box are: W33.3 x H28.5 x D39cm RESPONSIBLY SOURCED - You can be confident that your storage solution doesn’t cost the earth as All BANKERS BOX storage boxes are made from FSC certified board, printed with water based inks and are 100% recyclable