Command Module Post Landing Ventilation Controller Assembly. Unflown assembly measures 6.5 x 8.5 with a single toggle switch labeled “PLVC,” with positions for “normal,” and “open.” Label affixed to reverse reads: “Controller-Post Landing Vent, Assy OF…Serial 06362AAJ8891.” Two parts and status tags are tied to the front, one filled out by a technician and dated February 11, 1966, and the second tag giving a shelf life expiration date of January 20, 1975. In fine condition.