Comparison : Item # 4140A0104, Nafco Blower/Air Intake Filters
Item # 4140A0152, Nafco Blower/Air Intake Filters
Item # 4350A0104, Nafco Blower/Air Intake Filters
Item # 4350A0152, Nafco Blower/Air Intake Filters
Item # 4020A0104, Nafco Blower/Air Intake Filters