We got you covered™ with angle frames & grates of cast gray or ductile iron. H-20 traffic rated when properly installed in reinforced concrete. All sizes & styles are available. Contact us to request sizes not listed. Solid covers & ADA pedestrian style grates may be available on special orders. Open areas listed in grate descriptions (flow data must be calculated) Solid covers may be in stock or available on request. Beware of poor quality imports, always insist on products made in the USA. Please use the Contact Form or call us to request info & submittal sheets. 1-800-258-2278 Toll Free (972) 263-1360 DFW Local.