A ladder of fixed length and requires a means of support. The sidepieces (rails) may be tapered or flared near the bottom.
NSN 5990-00-079-5406
NSN 6650-01-220-8942
NSN 5935-00-807-5900
NSN 5910-01-418-0574
NSN 5895-01-255-1690
NSN 5855-01-442-8781
NSN 5990-00-181-2220
NSN 6685-01-397-6092
NSN 6110-01-122-5916
NSN 6685-00-753-7668
NSN 7035-01-578-0866
NSN 6645-00-081-4298