The Type BB manhole frame and covers are bolted and gasketed. They are also available without gaskets. Any type of lettering and designs available for an additional charge. Exceeds H-20 and HS-20 load requirements.
Please Note: Our 2006 Catalog makes slight changes to our traditional Catalog Number and Part Number systems. We have added a three digit suffix to provide a unique set description on Catalog items where we formerly had a maximum of one - i.e. an LBB328-100 becomes an LBB328-1-000.