400-24® Manhole Cover Sanitary Sewer
The standard 400-24® 24″ cast iron manhole cover is designed for use with the 400-24® and 380-24R® manhole rings, featuring sanitary sewer lettering. This stock item is H-20 traffic rated when paired with an H-20 rated ring and properly installed in reinforced concrete. Made from coated cast gray iron that meets ASTM A48 CL35B or better and AASHTO M306-10 (M105) standards, it ensures durability and compliance. Proudly made in the USA, this manhole cover delivers reliable performance for sanitary sewer infrastructure projects.
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