The tray is 1" tall.... 1/4" thick bottom + 3/4" edges and dividers. 13 7/8" x 10 1/2" I glued four post like supports into the Sys to hold the tray, they are 3/4" square x 3 3/4" tall. The supports are glued to the side of the Sys and rest on top of a 'X' cut bottom foam. So if you don't use the bottom foam add 3/16" to the support height. The bottom foam helps keep the tool from tilitng and pushing up on the tray. The tray is just barely above the rotary hammer.
I had to trim some of the lid foam off around the edges. It was just too tight a fit and the foam was bulging too much. That is a Tanos lid foam piece , but something else would work. The foam keeps all the stuff from bouncing around.
The whole deal just fits height wise in a Sys - II.