A metallic item which mounts upon or in a manhole and will accommodate a cover, manhole.
NSN 6645-01-070-7364
NSN 5996-01-568-4832
NSN 6130-01-426-3341
NSN 5920-01-411-4745
NSN 5920-01-441-0362
NSN 5905-01-235-5512
NSN 6145-01-226-3691
NSN 6685-01-550-9608
NSN 5915-00-512-2597
NSN 6685-00-339-8822
NSN 5996-00-221-7663
NSN 5996-00-097-1239