Original 1968 Camaro LH Vent Shut-Off Elbow Duct Assembly, in used condition. GM part #3939615, with an "FB" below the part number. Factory drivers side elbow style shut-off assembly that installs directly behind the dash air vent bezels. Correct for 1968 Camaro, RS, SS, Z-28 and 1967 Camaro with air conditioning. Vent assembly moves freely. Very good condition! $45. Will ship!