Best selling Diamond muffler now in 4″.  Female — Female Fitting allows installation inline with radon system exhaust or at the terminus.

Mufflers are intended to reduce exterior fan airflow noise.  LDVI couplers work best for interior vibration-based noise.  For more information on noisy radon systems, click here.

Install anywhere “above” the fan on the exhaust side of the system.  Best performance from manufacturer using an inline muffler directly above the fan and another muffler at the termination.

~10″ long and 5.5″ wide

Most bird barriers are made for a Male end, so either install inline or cut a small piece of 4″ PVC to fit the bird barrier to.

Short demo video here

Radon_Muffler_Comparison_Report