| 1501 | Duct Connector Maintenance Services | Company Product |
| 1502 | Duct Connector Pipe | Company Product |
| 1503 | Duct Connector Piping | Company Product |
| 1504 | Duct Connectors | Company Product |
| 1505 | Duct Fabrigation | Company Product |
| 1506 | Duct Hose | Company Product |
| 1507 | Duct Mount Probe | Company Product |
| 1508 | Duct Sealants | Company Product |
| 1509 | Duct Sealing Tapes | Company Product |
| 1510 | Duct Tapes | Company Product |
| 1511 | Ducted Aircon | Company Product |
| 1512 | Ductile Iron Butterfly Valves | Company Product |
| 1513 | Ductile Iron Castings | Company Product |
| 1514 | Ductile Iron Circular Manhole Covers | Company Product |
| 1515 | Ductile Iron Circular Manhole Frames | Company Product |
| 1516 | Ductile Iron Double Flanged Spring Loaded Silent Check Valves | Company Product |
| 1517 | Ductile Iron Gate Valves | Company Product |
| 1518 | Ductile Iron Heavy Duty Air Tight Manhole Covers | Company Product |
| 1519 | Ductile Iron Heavy Duty Air Tight Manhole Frames | Company Product |
| 1520 | Ductile Iron Heavy Duty Airtight Watertight Recessed Manhole Covers & Frame | Company Product |
| 1521 | Ductile Iron Heavy Duty Manhole Covers | Company Product |
| 1522 | Ductile Iron Heavy Duty Manhole Frames | Company Product |
| 1523 | Ductile Iron Heavy Duty Recessed Manhole Covers | Company Product |
| 1524 | Ductile Iron Heavy Duty Recessed Manhole Frames | Company Product |
| 1525 | Ductile Iron Heavy Duty Water Tight Manhole Covers | Company Product |
| 1526 | Ductile Iron Heavy Duty Water Tight Manhole Frames | Company Product |
| 1527 | Ductile Iron Manhole Covers & Frame | Company Product |
| 1528 | Ductile Iron Medium Duty Manhole Covers | Company Product |
| 1529 | Ductile Iron Medium Duty Manhole Frames | Company Product |
| 1530 | Ductile Iron Medium Duty Recessed Manhole Covers | Company Product |