Scarce pair of air connector plenums for the Apollo pressure suit, measuring 10.25″ x 3.5″ and 9″ x 5.25″, with connector ports featuring identical part numbers of "2924," and serial numbers listed consecutively as "321," "322," "323," and "324." These plenums provided the means of connecting the gas connectors on the chest of the Apollo pressure suit, with both featuring inflow and outflow oxygen connectors. The longer plenum also features hardware for the diverter valve located on the suit chest; this valve was capable of directing either the entirety of the gas flow to the helmet, or a 50/50 mix sent to the helmet and to the torso area. In overall very good to fine condition, with expected wear from use and removal from suit.
