It is designed to fit any half barrel and then some. Adding a pic of the interior for reference. Plenty of space left over after fitting a 1/2 barrel. Walls are galvanized, the floor appears to be stainless. 1/2 barrel is not included, just the rator.
............Alright Brain, you don't like me, and I don't like you. But lets just do this, and I can get back to killing you with beer......~Homer