Yes, it is. The oldest version had an extremely boxy appearance (happens to be my favorite M-250A2 design). The second design still had the flat front, however the top of the fixture was a bit more rounded off. Finally there's this version which i don't particularly care for. One thing i like about GE is when they redesign their powr/door fixtures, the doors are generally compatable with different generations. I guess the M-250A and newest M-400A are exceptions though...