My keezer build is starting to take place. I've got my freezer, controller, a fan, and a few other odds and ends right now. I've got most everything else in my cart at kegconnection. I'm going all stainless from the get go. My collar will be constructed from 2x lumber. Most likely 2x6. I've got 3" shanks in my cart and according to my measurements, they should fit with approx 1/2" to spare. I'm second guessing my decision and thinking I may change to 4" shanks. If anyone can assure me that the 3" is indeed long enough, it would be much appreciated.