Double end walls and double layer base provides basic stacking strength - up to 5 high. Max load 25 kg. Holds foolscap suspension files/manilla folders, or up to 3 lever arch files, or 6 ring binders. Label, track and find all your archived documents using the FREE online Marbig Archive Box Management System www.marbig.com.au/archivesystem. Outside dimensions: 420(L) x 315(W) x 260(H)mm. Australian made from 100% recycled board and is 100% recyclable.