A ladder of fixed length and requires a means of support. The sidepieces (rails) may be tapered or flared near the bottom.
NSN 5925-00-994-0316
NSN 5950-00-225-8849
NSN 6240-01-212-2850
NSN 5985-00-972-3857
NSN 5910-00-075-6936
NSN 5945-00-632-0853
NSN 5999-01-657-2960
NSN 5905-00-529-6999
NSN 5990-00-053-1892
NSN 5975-01-323-0040
NSN 4140-01-463-6377
NSN 6110-01-461-5491