| 541 | Finned Tube Heat Exchangers | Company Product |
| 542 | Fir Timber | Company Product |
| 543 | Fire & Smoke Detectors | Company Product |
| 544 | Fire Alarm Bells | Company Product |
| 545 | Fire Alarm Control Panels | Company Product |
| 546 | Fire Alarm Panels | Company Product |
| 547 | Fire Alarm Systems | Company Product |
| 548 | Fire Alarms | Company Product |
| 549 | Fire Blanket | Company Product |
| 550 | Fire Blankets | Company Product |
| 551 | Fire Bricks | Company Product |
| 552 | Fire Clay Bricks | Company Product |
| 553 | Fire Couplings | Company Product |
| 554 | Fire Dampers | Company Product |
| 555 | Fire Detectors & Detection Systems | Company Product |
| 556 | Fire Doors | Company Product |
| 557 | Fire Engines | Company Product |
| 558 | Fire Exit Devices | Company Product |
| 559 | Fire Extinguisher Ball | Company Product |
| 560 | Fire Extinguisher Cabinets | Company Product |
| 561 | Fire Extinguisher Cylinders | Company Product |
| 562 | Fire Extinguisher Powder | Company Product |
| 563 | Fire Extinguisher Refilling Machines | Company Product |
| 564 | Fire Extinguisher System | Company Product |
| 565 | Fire Extinguisher Valves | Company Product |
| 566 | Fire Extinguishers | Company Product |
| 567 | Fire Extinguishing Control Panels | Company Product |
| 568 | Fire Extinguishing Systems | Company Product |
| 569 | Fire Fighting Chemicals | Company Product |
| 570 | Fire Fighting Equipment | Company Product |