The 1590XX enclosure is here. It's long and lovely, balancing height (It's about as tall as a 125B) with the luxury of nearly 5 inches of length. You can stuff some serious guts into this thing!
This size is much beloved by guitar pedal makers, ham radio enthusiasts, and hobbyists with a penchant for e-cigarette mods. We say, bring on the creativity!
The 1590XX stompbox is made of die-cast aluminum and comes with four screws in a perfectly perfect shrink-wrapped package. 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. It's AWESOME.
Note that the Internet isn't in complete agreement on what the official size is for the 1790NS/1590XX box, so you should check my measurements just to make sure we're talkin' 'bout the same thing. This Hammond replacement enclosure measures 145 x 121 x 40mm (5.7 x 4.7 x 1.5").
1590XX Hammond clone enclosure
With back plate
Four #6-32 screws
Length: 145mm (5.7")
Width: 121mm (4.7")
Height: 40mm (1.5"), including back plate