dmf muffler uses a twostage metallic filter to trap and reduce diesel particulate ... matter pm each filter stage consists of alternating layers of ... allows easy removal of the centerbody filter section in the event of an engine ... -free take-apart design allows easy filter access in the event of an engine ... limits compliant two corrugated metal filter stages acceptable fuel types ˇ ultra ... ˇ constructed of aluminized-409 grade stainless steel for strength and corrosion ...