Pardon my ignorance when it comes to this. I am not really a home brewer. However I do plan to build my own kegerator into my basement bar that I am currently planning. I would like to do a dual tower but really only plan to hook up commercial beer like Miller lite along with something maybe not as generic but yet not my own brew. Seems like in any standard mini fridge You will only be able to get a 1/2 barrel or pony into it. So 2 corny's would be about the only way to get multiple beers. However can you get them filled with something like other then your own home brew like Miller lite?