The 1590XX enclosure is here. It comes with 4 screws. It's diecast aluminum. It's shrinkwrapped. It's AWESOME.
The aluminum machining looks way nicer and more finished than what I used to get from the big suppliers before I started sourcing my own.
The internet isn't in complete agreement on what the 1790NS/1590XX official size is so you should check my measurements just to make sure we're talkin' 'bout the same thing.
It measures 145 x 121 x 40mm or 5.7" x 4.7" x 1.5"