The dimensions of the controller are on the page you listed, give it a measure and see if it goes.
Scythe fan controllers can usually only handle up to 12v per channel. So don't go plugging in too many fans. I did, I plugged 6 120mm fans into 1 channel. That killed it alright. Good excuse to go out and buy one of these rood boys.
The more observant xb owner will notice that the PC above isn't my xb. It's my temp build while my xb is undergoing reconstruction. Not the best pica to show off the fan controller, but worth looking for if you want one that can handle more than 1 fan per channel. Lamtron make good quality controllers. I'm not a big fan of Scythe NZXT or Aerocool fan controllers. The internals are a bit limp for mine. There's 17 fans in my case.