Photo boxes are one of my favorite storage solutions. They're inexpensive, stackable and readily available. They're functional by themselves, but even more so with these dividers you can mix and match to meet a wide variety of storage requirements.
The dividers are designed to split a standard photo box into a 2x3 grid of 90.5mm x 90.5mm cubes. In addition to the basic 90.5mm square divider, there are models for the most common combinations of half (45.25mm) and double (181mm) widths. See the file descriptions for exact dimensions.
* External dimensions of a standard photo box: 11" x 4" x 7.5" (27.9cm x 10.16cm x 19cm)
The author marked this model as their own original creation.