Best Chamber Type Silencer:
Expected Attenuation is 28 to 32 dBA
Use a model M51 for the highest degree of silencing in areas requiring “hospital grade� noise reductions. The M51 is presently the top-of-the-line silencer without resorting to multiple silencers in series or custom designed silencers.
Example: Suitable for use where background noise is extremely low, such as residential or hospital locations away from busy streets.