Maxim MB21 Chamber Type Blower Silencers, Expected Attenuation is 15 to 30 dBA, to download spec page click here
An efficient economical design, the MB21 is useful on blower intakes or discharges. Use an MB21 where some background noise is always present and high degrees of silencing is not required.
Typical Applications: Rotary positive blower intake and discharge (10" size and below)
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