The number is located on top of the unit. It is stamped in red paint.
overall: 7 in x 3 1/2 in x 8 in
This has 12 tubes in the top and two pinch tipped bulbs as well. There are 30 male banana plugs on the bottom that are wired to the tube sockets through carbon resistors. There are two silver pull handles on the top. There is a tape label on one of the handles with voltages marked on it. There is a paper tag attached to one of the pull handles that has "will not work in machine" written in pencil on it.