5" 125mm - Metal Ducting Inline Silencer Attenuator - 600mm Inline Fan Kits these units will give maximum

these units will give maximum performance even against pressures caused by long lengths of ducting and resistance by grilles

Will provide up to 70% heat recovery

Brand: Swiftair Timer Model: (No Plug) - Live

(please choose this option from the drop down menu above)

as it can be installed indoors

5" 125mm - Metal Ducting Inline Silencer Attenuator - 600mm Inline Fan Kits these units will give maximumSilenced Fan Silencer Use a Silenced Fan Silencer to absorb the unwanted noise; two silencers can be used in series where unwanted noise is a particular problem. With the higher flow rates of our professional fans, air noise can become a problem. Air moving through ducts creates noise. The faster the air, the more noise is created. If noise is a problem, connect a Silenced Air to your system. A Silenced Air is most effective if positioned directly