Lack drawers designed around strong lack brackets and dry boxes made from Ikea Samla containers.

Grid file is supposed to be glued to the front of the box for additional rigidity.

Parts needed:

Box x 3

Grid x 3

Side_l x 3

Side_r x 3

For mounting you will need 16 M3 self tapping-screws

Feel free to suggest tweaks and changes)

Thanks to Vladigor for grid model