No other part numbers with same form, fit, and function found.
A metallic item which mounts upon or in a manhole and will accommodate a cover, manhole.
NSN 4140-00-490-9028
NSN 5999-01-463-5898
NSN 2925-01-617-6302
NSN 5915-01-408-4655
NSN 5935-00-550-1340
NSN 5999-00-686-6001
NSN 5930-01-320-4991
NSN 6685-00-114-1826
NSN 6110-01-357-9910
NSN 5920-01-559-6721
NSN 5910-00-153-2609
NSN 6610-01-344-0972