The Louisville MSD Bolt Down Watertight (BDWT) Sanitary Sewer manhole casting is a standard BDWT sanitary sewer manhole covering for the city of Louisville, Kentucky and surrounding areas. It fits a 24" diameter opening complete with the MSD "SEWER" lettering on the cover and a 7" rise frame with bolt pads and grooves to firmly secure the cover to the frame. 
 
Our castings meet AASHTO specifications. They're made with grey cast iron of ASTM A48, Class 35B standards with a load rating of H-25/HS-20. Buy America certifications and MSD approval documents are available upon request. 
 
Select models and quantities are available for local delivery or same-day pickup. Freight shipping is required for destinations outside of local delivery zone.