This a modification of the Top Tray Gridfinity by Uncle Jessy Gridfinity - Harbor Freight Mini Toolbox that allows for the unobstructed use of additional side trays by nealc10 Accessories for Harbor Freight Mini Toolboxes.

I remixed the original Top Tray model to have cutouts on either side to allow for a more flush fit when using additional side tray accessories. The trays print and functions as normal without the use of the side trays, but just leaves the option open if you want to use them in conjunction with each other. Additionally, the measurements were adjusted slightly to be better fit to the 2026 Harbor Freight toolboxes as there seems to have been a slight change over the years.