Apollo Command Module LiOH Filter Assembly, 7″ x 7.25″ x 5.25″, bearing an affixed Airesearch label on the side, reading: “Absorber Element CO2, Part 813520-1-1, Serial 48-948, Order NAS-9-150, NASA 004000048948, Ref Spec ME901-0218-0031." Includes its rare original metal housing, which measures 11″ x 18.25″ x 11.25″, with latched door marked “B” and bearing an affixed Airesearch label, which reads: “Canister CO2…Part 811499-8-1, Serial 38-140, Order NAS-9-150, NASA 004000038140.” The door features raised and stamped numbers, “B17 28,” “811569/2,” and “811569-12,” and date stamps of October 24, 1968 and January 17, 1969. The housing features an inlet and an outlet, with rings bearing engraved part numbers: “Gamah F35-300AW, Lot 341-/4098-545, 811117-2” and “Gamah F35-T-300GV, 811117-2, MFG Lot 098-781.” The inside of the door and canister housing is stamped, “811482-6…WO85351” and “811568-1B LASR 4 Q 66,” and tape affixed to the outside is marked "Apollo Space Capsule Part." In fine condition. This lithium hydroxide canister was designed to maintain a pure-oxygen environment within the Apollo spacecraft; utilized as part of the Environmental Control Unit (ECU), this assembly used LiOH to absorb carbon dioxide and a filter to trap particulate in the circulating air.
