300-24® Manhole Drainage Grate

The 24″ standard cast iron 300-24® manhole grate is designed to fit the standard 280-24R® reversible manhole ring for top or bottom flanged installations. It will also fit the standard 300-24® bottom flanged manhole ring as well. 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 with an environmentally friendly water-based black coating, it meets ASTM A48 CL35B or better and AASHTO M306-10 (M105) standards. Proudly made in the USA, this grate delivers durability, compliance, and eco-conscious performance for infrastructure projects.

NOTE: Grate slot total open area is 115 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.