Vents UK SR 125/900 Silencer

The effective and economic solution for sound attenuation in circular duct systems. 
125mm diameter x 900mm long duct mounted extractor fan silencer. Can be used with manufacturer of fan with spigots to mount inline with ducting.
The addition of this silencer to a system will act in the same way a silencer does on a car, so if you’ve ever heard a car with no silencer fitted, this gives you an idea of the impact a silencer can have on a system.
Please Note — for a straight through silencer to work to have the maximum impact on a system, a silencer should be fixed either side of the fan, this will give 3 benefits to the overall noise level of the system.
1. System side (usually the noise level inside a building) noise level is reduced
2. Atmospheric side (usually the noise level outside a building) noise level is reduced
3. The breakout from the fan is reduced, this could be a big factor depending where the fan is fitted, such as a false ceiling in a class room or office area. 
We offer Fast Clamps to connect the fan spigot and silencer spigot together, please see our FC range for prices. 
Available sizes 100mm — 500mm 
*Noise is a complicated medium to get right, if in doubt or you have specific target levels to achieve, please contact us via any means you feel comfortable with and we’ll find a solution to your problem