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 5975-00-854-2657
NSN 6610-00-544-5641
NSN 6105-00-351-8009
NSN 6620-00-186-8220
NSN 5999-00-203-5573
NSN 5960-01-399-4327
NSN 6135-00-377-9165
NSN 5965-01-560-8572
NSN 5998-01-602-9656
NSN 5996-01-437-8824
NSN 5975-00-679-6738
NSN 5925-00-275-7599