DURABLE - These heavy-duty strong storage boxes feature 3 layers of cardboard to the handle end panels and 2 layers to the front 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 and lever arch file STACKABLE - Strength in engineering and high quality materials ensures that your system storage boxes can be stacked up to six 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. The handholes are reinforced because of the 3 layers of board on the end panels, 2 of which are glued together INTERNAL DIMENSIONS - The internal dimensions of this system storage box are: W37.8 x H29.3 x D54.5cm 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