So *technically*, I did, in fact, order the correct size - its just that the listed sizes are off. I use it for all my long conversations when I work from home using my Panasonic cordless phone and the office uses them with their Panasonic business phones. Once your installation is complete make a few marks on the railing, so when you disassemble it and assemble it back the uninstall/install process will take 10 minutes. I purchased this back in May of 2013 for about $200 from Amazon. Not as advertised very disappointed Pay the money for this one time purchase. Further, the player often will not accept input from the remote and requires removing power, then re-connecting. Le Focal sono risultate le migliori in tutto ma costavano anche quasi 1000. They were large and round and stood out more than if I didnt put them in. Being able to play your phone with the provided Type-C to Type-C USB cable is also a nice feature but once again just a gimmick to me because I have the LG V40 which only has a hi-fi quad DAC when wired through the aux port.