Where can we get 5 1/4 inch cardboard di

We need boxes to store CDs (in their jewel cases) in cupboards. For our 3 1/2 inch floppys we have such boxes (2 disks wide, 15 inches front to back, plus a nice plastic handle on the front to slide them off the shelf) but the 5 1/4 inch boxes have been discontinued as no one still uses floppys of that size. But we need at least a dozen for our software on CD

Does anyone know of a supplier who still does them? Ideally a supplier in the UK.

We are not interested in plastic racks/sliders oranything that individually holds CDs as they waste about 50% of the space they take up. Nor do we wish to remove the CD’s rfom the jewel cases as we often need the CD-Keys on the back of the cases.