Selling my SKB iSeries 1610-5 Waterproof Case with cubed foam. It is in good condition and works fine, but I have taken out some of the cubed foam to fit my items in it. But one can easily and cheaply by replacement foam if you want to custom fit your own gear.
This case is slightly different than the current version of the 1610-5. I think it's just cosmetic changes, but mine may also be a slightly different in size.
For the interior space, I measured that it is about 15.875" by 9.875" by 5.5" (not including the foam).