With flat stainless trim and replaceable kick-plates on the corners, the early model had doors on both sides of the center bench, and pockets behind for air equipment and other feed through needs. In 1942 you could chose between the Master or Du Luxe Departmental Service Unit. The Master had less trim and the simple flying A emblem. The Du Luxe model had more customaztion options, like wood lettering for the top of the unit, and the chrome circle surrounded A logo. This model was possibly designed by Ladislav Sutnar.