| 52 / | HD | STATIC STRUCTURES (E.G., BUILDINGS) |
| 474 | DF | FACER HELD BY STIFFENER-TYPE FRAME {11} |
| 479 | DF | .~ Back-to-back facers spaced by concealed framing {2} |
| 481.1 | DF | .~.~ With vertical support (e.g., stud) between facers {1} |
| 481.2 | ![]() | .~.~.~ Demountable type (e.g., partition) |