Abstract: An occupant restraint cushion housing is mounted within an instrument panel structure and provided with flanges on the side and upper edges of an elongated opening thereof. An inflatable occupant restraint cushion is housed within the housing. A cover assembly for the housing is secured to the instrument panel structure and includes an integrally hinged closure normally closing an opening in the cover assembly generally co-extensive with that of the housing. Flanges of the cover assembly define the side and upper edges of the opening. The closure is provided with flanges which respectively underlie the flanges of the cover assembly to releasably hold the closure against movement outwardly of the cover assembly until the cushion is inflated. Ribs on the side edge flanges of the closure engage flanges of the housing to block inward movement of the side edges of the closure.