46 21 00 Screening Equipment
46 21 79 Screenings Storage Containers
46 21 11Climber-type Bar Screens46 21 13Chain-and-Rake Bar Screens46 21 16Flexible Rake Bar Screens46 21 17Catenary Bar Screens46 21 19Continuous Belt Screens46 21 23Cylindrical Bar Screens46 21 26Step Screens46 21 33Rotary Drum Screens46 21 39Spiral Screens46 21 43Band Screens46 21 46Disc Screens46 21 51Traveling Water Screens46 21 53Perforated Plate Screens46 21 56Wedge Wire Screens46 21 57Element Screens46 21 71Trash Raking Equipment46 21 73Screenings Washing and Compacting Equipment46 21 76Vacuum Screenings Conveying Equipment46 21 79Screenings Storage Containers46 21 83Septage Receiving Equipment