The NHT amplifier is the same size and their rack mount ears fit the M200. The holes line up and the ears come with black screws. The web site to order the ears is: http://ww1.onecall.com/PID_16214.htm I would put one blank rack mount filler panel (maybe ones with holes for air circulation) between each amplifier. I would use the one rack mount space panel, 1.75", which is the same heigth as the M200. You can get them from www.markertek.com. The panels are made by Middle Atlantic Products Inc. www.middleatlantic.com Middle Atlantic also makes and sells through dealers a rack mount shelf with front cutout for the Outlaw 950. I have one of these and it is great. I also have the rack mount ears for the M200 and they are great. Good luck.