229 / | HD | ENVELOPES, WRAPPERS, AND PAPERBOARD BOXES |
100 | DF | PAPERBOARD BOX {54} |
124 | DF | .~ With closure for an access opening {7} |
126 | DF | .~.~ Foldable wall extension (e.g., closure flap) {13} |
155 | DF | .~.~.~ Plural extensions mechanically interlocked with each other {2} |
156 | DF | .~.~.~.~ One extension interlocks with at least two others {1} |
157 | .~.~.~.~.~ The one extension projects through an opening in each of the others |