The Lutron comment in the other post made me think of these I did over the summer:
The smaller panels on the wall are dimming panels and the longer one is for switching only.
More dimming panels. It was tough to shoe horn this many panels in one room. The other shot is the same room, the wall to the right of this photo. Behind me is a 1200 amp distribution panel, and to the left the penthouse riser and EM panel. Lots of stuff in this room. The trough had to be constructed like that because you can't hit anywhere but the top of these panels, and you need 6" of space on top, bottom and in back of them. Anyway, enjoy.