160 / | HD | FLEXIBLE OR PORTABLE CLOSURE, PARTITION, OR PANEL |
12 | WITH INSECT EXITS {5} | |
13 | DF | .~> Applied to slidably interconnected frames or panels |
14 | DF | .~> Zigzag or crimped surface |
15 | DF | .~> Spaced or overlapping sections |
16 | DF | .~> Conical, prismatic or other protuberances |
17 | DF | .~> Bar, grooved or apertured |