We got you covered™ with the 814® series 18″ X 30″ frames & grates. Use for storm inlet, curb, area & linear grate arrangements, TXDOT standard for many years. All combination frames, standard grates, vane grates, pedestrian style ADA rated grates, curb hoods, I-beams, nuts & bolts, stock items. TXDOT approved specifications. Check individual items for traffic rating & ASTM data. Open areas listed in grate descriptions (flow data must be calculated by professional qualified engineer) Specify genuine American made quality products from Bass & Hays! Please use the Contact Form or call us to request info & submittal sheets. 1-800-258-2278 Toll Free (972) 263-1360 DFW Local.