I'm using it as a shoe rack. The 62cm width is no longer available, and the storage box wide, which is perfect for Karabo, is no longer available, so I think you have three buy two of the same thing to increase the number of shelves (the number of steel pillars will increase, but that's no problem), consider buying second-hand items on Mercari, etc., or do DIY yourself. In my case, I was only able to purchase three pieces of rail for the Calabox, so I'm currently putting the extra shelves on top of that. (*Note: The rails are slightly angled, with part of the rail sticking out slightly.) Also, the screws for the rails for the Karabo are too short for the Advance, so they lack stability. Therefore, when purchasing rails to match the Advance, we recommend that you purchase screws or bolts and nuts yourself to fix them in place, as this will make them more stable. The screws that come with the rails are 13mm long, and L15mm is not long enough to attach the screws to the Advance pillars and add the nuts. The best length is 18mm? I think the best thing to do is to buy a 30cm square piece of wood from a DIY store, fix it to the pillar, and then put a 58cm x 28cm board across it.