I designed these mounts for the Embraer 145 regional jets I work on. The unit in the mount in the galley is an MP3 player for the public address system, and pre recorded features of the aircraft etc. What was in there previously were automotive CD players. The adaptor boxes were designed to be made to fit all the pre existing mount holes in the galleys. After designing the mount. I was required to manufacture 119 of these damn things lol. It's nice to see something I designed, then had to manufacture when I fly on the aircraft I work on