Comparison : Item # EFS-05-038/1, EFS Series Discharge Silencer
Item # EFS-07-050/1, EFS Series Discharge Silencer
Item # EFS-11-100/2, EFS Series Discharge Silencer
Item # EFS-07-NW16/1, EFS Series Discharge Silencer
Item # EFS-07-NW25/1, EFS Series Discharge Silencer