49 / | HD | MOVABLE OR REMOVABLE CLOSURES |
404 | DF | WITH MEANS MOUNTING CLOSURE FOR RECIPROCATION {16} |
428 | DF | .~ Diverse or springy material guide or slide {4} |
431 | DF | .~.~ Interengaging sections on portal and closure {2} |
432 | .~.~.~ On parting strip and adjacent closures |