INDEX MOUNTING ACCESSORIES 5 Protection guard 6 Louvre back draft shutters 10 Supports, connectors, clamps, anti-vibration mounts 13 Sound attenuators 21 Air vents (air inlets) 23 Self-adjusting valves 30 Exhaust and/or supply valves 36 Exhaust and/or supply valves: Accessories 40 Back draft shutters 47 Ducting, reduction elements and duct joining piece 48 Grilles, diffusers and terminal connectors 60 Roof terminal cowl and protection guards 66 Filters 68 ELECTRICAL ACCESSORIES 77 Single phase speed controller 78 Switches 81 Transformers, timers, humidistats, thermostats, air quality sensors 86 Electrical accessories for electric and water coil heaters 89 Electrical accessories for electric heaters 92 Adjustable frequency drives 94 Intelligent elements for demand controlled ventilation 97 Car park systems 105 Car park ventilation control system 107 Pollution detection system 108 Fire detection system 109