American-made extra heavy-duty frame and grate castings are available in a range of load ratings to meet various needs. Offered in all sizes, styles, and open areas, these castings are crafted from durable cast gray or ductile iron and can be customized to your specifications. Options include area drains, storm drains, storm and curb inlets, directional flow (vane grates), and trench grates, with bolted and security features, lift assists, and skid-resistant surfaces available for enhanced funct