| 511 | Finned Heaters | Company Product |
| 512 | Finned Tube Heat Exchangers | Company Product |
| 513 | Fir Timber | Company Product |
| 514 | Fire & Smoke Detectors | Company Product |
| 515 | Fire Alarm Bells | Company Product |
| 516 | Fire Alarm Control Panels | Company Product |
| 517 | Fire Alarm Panels | Company Product |
| 518 | Fire Alarm Systems | Company Product |
| 519 | Fire Alarms | Company Product |
| 520 | Fire Blanket | Company Product |
| 521 | Fire Blankets | Company Product |
| 522 | Fire Bricks | Company Product |
| 523 | Fire Clay Bricks | Company Product |
| 524 | Fire Couplings | Company Product |
| 525 | Fire Dampers | Company Product |
| 526 | Fire Detectors & Detection Systems | Company Product |
| 527 | Fire Doors | Company Product |
| 528 | Fire Engines | Company Product |
| 529 | Fire Exit Devices | Company Product |
| 530 | Fire Extinguisher Ball | Company Product |
| 531 | Fire Extinguisher Cabinets | Company Product |
| 532 | Fire Extinguisher Cylinders | Company Product |
| 533 | Fire Extinguisher Powder | Company Product |
| 534 | Fire Extinguisher Refilling Machines | Company Product |
| 535 | Fire Extinguisher System | Company Product |
| 536 | Fire Extinguisher Valves | Company Product |
| 537 | Fire Extinguishers | Company Product |
| 538 | Fire Extinguishing Control Panels | Company Product |
| 539 | Fire Extinguishing Systems | Company Product |
| 540 | Fire Fighting Chemicals | Company Product |