Trays are made to hold 32 17ml paint bottles such as those from vallejo, ak interactive, and army painter.

Designed specifcally for these cheap wooden cabinets that fit under a desk https://www.homedepot.com/p/MAYKOOSH-Distressed-Black-5-Drawer-with-Shelf-30-7-in-W-x-15-7-in-D-x-26-3-in-H-Wooden-File-Cabinets-Vertical-File-Cabinet-11400MK/325819842

Trays fit three wide in each drawer