400-24® Manhole Drainage Grate

The 400-24® 24″ cast iron manhole grate is designed to fit the 400-24® and 380-24R® manhole rings. This stock item is H-20 traffic rated when paired with an H-20 rated ring and properly installed in reinforced concrete. Solid covers are also available as stock items, providing versatile options for various applications. Made from uncoated cast gray iron that meets ASTM A48 CL35B or better and AASHTO M306-10 (M105) standards, this grate ensures durability and compliance. Proudly made in the USA, it is a dependable choice for infrastructure projects.

NOTE: Grate slot total open area is 180 square inches (actual flow must be calculated by a qualified engineer)

Contact Bass & Hays or call us at 1-800-258-2278 toll free or 972-263-1360 DFW Metro. Check stock, request technical data, drawings, submittals, BABA, AIS or LEED  documentations and certifications, or to place orders.