Standard 30″ watertight manhole rings & covers with bolts, gaskets, standard lettering or LOGOs. Cast gray iron. Stock items. Special lettering or custom LOGOs may be available on special orders. H-20 traffic rated when properly installed in reinforced concrete. Cast ductile iron covers where required may be available- specify cast gray or ductile iron covers. Made In USA. LEED® certifications available on request. Please use the Contact Form or call us to request info & submittal sheets. 1-800-258-2278 Toll Free or (972) 263-1360 DFW Local.