220 / | HD | RECEPTACLES |
600 | DF | END WALL STRUCTURE {8} |
604 | .~ One-piece side and end wall {3} | |
605 | DF | .~.~> With support structure {1} |
607 | DF | .~.~> End wall formed as a one-piece grid or mesh structure |
608 | DF | .~.~> Contoured end wall (e.g., curved, corrugated, ribbed, etc.) {1} |