A ladder of fixed length and requires a means of support. The sidepieces (rails) may be tapered or flared near the bottom.
NSN 6110-00-160-1374
NSN 5925-00-312-7941
NSN 6240-01-130-7393
NSN 5945-01-454-5184
NSN 5930-00-137-4584
NSN 5915-00-907-0579
NSN 5990-00-862-3271
NSN 6145-01-254-5868
NSN 6240-01-454-4392
NSN 5915-01-613-6024
NSN 6220-01-443-2373
NSN 5990-00-711-1739