174 / | HD | ELECTRICITY: CONDUCTORS AND INSULATORS |
50 | DF | BOXES AND HOUSINGS {4} |
52.1 | DF | .~ With electric device or mounting means therefor {5} |
53 | .~.~ Plug receptacle or wall switch type {4} | |
54 | DF | .~.~.~> With fixture coupling or mounting means |
55 | DF | .~.~.~> Unitary with face plate {1} |
57 | DF | .~.~.~> Adjustable |
58 | DF | .~.~.~> With box or housing mounting means |