At long last, here are some detailed photos of the Monome 128 enclosure kit. The chassis is a formed piece of sheet metal, with mounting holes that will fit either Arduino or Monome mk logic board:
The end caps are available in walnut or clear polycarbonate. They fit neatly on either end, as shown here:
Six screws hold everything together. They come up through the bottom of the chassis, through the end-caps, and attach to the faceplate itself.
These enclosures are an attractive, durable housing for your Monome!
The kit includes the chassis, end-caps, and all necessary assembly hardware. The faceplate, also shown here, is sold separately.