 | ANA1/ANB1, High Noise Reduction Silencer The high noise reduction style silencer ANA1 keeps the noise level inside a plant below 85dB(A) with a noise reduction effect of 40dB(A). Series ANB1 has a noise reduction effect of 38dB(A) and has a larger effective area with the same port size as series ANA1. It is also available for common exhaust from manifolds. |