| VENTILATION DAMPERS | EXYTE HARGREAVES LTD |
| GDHV VENTILATION - GLEN DIMPLEX HEATING & VENTILAT |
| LINDAB LTD |
| SE CONTROLS |
| TROX UK LTD |
| ZEHNDER LTD |
| VENTILATION DAMPERS Duct Dampers | EXYTE HARGREAVES LTD |
| iDuct Ltd |
| LINDAB LTD |
| TROX UK LTD |
| VENTILATION DAMPERS Fire Dampers | COMPLETE FIRE PROTECTION LTD |
| EXYTE HARGREAVES LTD |
| GDHV VENTILATION - GLEN DIMPLEX HEATING & VENTILAT |
| LINDAB LTD |
| LORIENT POLYPRODUCTS LTD |
| SE CONTROLS |
| TROX UK LTD |
| ZEHNDER LTD |
| VENTILATION DAMPERS Industrial | LINDAB LTD |
| TROX UK LTD |
| VENTILATION DAMPERS IRIS Dampers | LINDAB LTD |
| VENTILATION DAMPERS Tunnel Dampers | TROX UK LTD |
