These are very strong containers / storage solution. You can stack on top of each other or when not in use you can nest into each other saving space. Thee black corner edges will allow you to stack on each other (4 will be provided per bin) You can use them for what ever use you want business / warehouse / garage / storage / space saving ideas just we did. These plastic grey coloured are made from recycled plastic. All Sizes are approximate Outer Sizes: Width: 49cm Height: 30cm Depth: 40cm Internal Sizes: Width: 44cm Height: 29cm Depth: 33cm You will receive 5 boxs. 5 X New Grey Plastic Order Picking Storage Boxes Scooped Front Stackable Nestable Amazing Organizing Space Saver