Gridfinity Carrier for Three Eighths Drive Harbor Freight Socket Trays

This is a carrier to lock 2x Harbor Freight US General Half Inch Drive Socket Tray (like the one included here: https://www.harborfreight.com/tool-storage-organization/tool-storage/tool-organizers/socket-trays-rails/peg-type-sae-socket-tray-3-piece-blue-58939.html) in place in a Gridfinity toolbox. It would take a 4x9 Grid to place this. This design is meant to house both the SAE and Metric trays from US General for 3/8 inch drive sockets. I've got designs for the 1/2 inch drive and 1/4 drive sets as well

I didn't want to waste time printing something that enclosed the entire tray, nor would such a thing fit on my printer in one piece, so I broke it into two symmetrical end pieces and a 4x1 thin center support