I loved these drawers, but I thought, What's the biggest I could make it and still fit on a 256x256x256 build plate?

Turns out it is a 5x5 Gridfinity and 5 drawers high.

Note the drawers are 5u Gridfinity bin tall.

I've also included the multi connect mounts to attach it to a Multiboard tile. Also, a couple Double Sided Snap - Part B to place behind the shelf so it will hang straight.