A QU16 fits almost perfect in this Gator case.
Gator QU16 Case
The mixer will need to set sideways in the case as in the mixer side to the top and bottom of the case as you would be carrying it.
The case comes with some blocking that velcro to the interior of the case fit the mixer.
I did cut two pieces of 3/4 inch hard foam to slip in each side of the mixer.
The case works well for local transport, not something though I would use on a world tour being loaded into a semi trailer!!
I’ll get a picture and post it of my Qu16 in the case.