Same unit as the TDD-1, with the same features, but one very beautiful upgrade. The entire exterior is brushed 304-type stainless steel instead of the standard black vinyl. A few of us working here at the shop have made the upgrade to this all stainless model and have never regretted the decision. Especially appropriate if you are placing it next to stainless appliances or a stainless barbecue. This unit will only hold 3 five gallon cornelius kegs, or one 15.5 gallon sanke keg. Miller Light 15.5 gallon fits barely, but the keg will hit the door. Note - True does not offer residential support for their kegerators. These are designed to be used in commercial settings, so residential support is not offered. This is the model of True Kegerator that our president, Olin Schultz, keeps his own homebrew and draft beer in at home!