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