49 / | HD | MOVABLE OR REMOVABLE CLOSURES |
208 | DF | MOUNTED FOR MULTIDIRECTIONAL OR OBLIQUE MOVEMENT {7} |
246 | DF | .~ Swings on plural axes; e.g., pivotal link arms {4} |
250 | .~.~ With additional slide guiding closure movement {2} | |
251 | DF | .~.~.~> Friction slide mount; e.g., biased |
252 | DF | .~.~.~> Guide on portal frame |