Our newest 4″ muffler.  Designed by the famous Alpha86!

Inline muffler.  Arrow shows airflow direction.

Compact size.  Approximately 6″ x 6″ x 7″ in total.  About half the size of our traditional 4″ muffler.

Use a scrap piece of PVC to add rain guard at the termination of the system.  It can also be installed inline, anywhere above the exhaust side of the fan.

Rain guard sold separately

Using AI concepts as a framework for a compact and cost effective muffler, Shane Barr, of Alpha86, designed an industry first muffler with expansion chamber tuning and resistive acoustic surfaces.