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A vented heading for the outer frame of an airtight double-hung sash window unit adapted to be seated in an opening of an exterior wall of an apartment. Vent holes in a head panel allow fresh air flow into the heading; and a baffle member at the back of the heading serves to direct the airflow downw

A vented heading for the outer frame of an airtight double-hung sash window unit adapted to be seated in an opening of an exterior wall of an apartment. Vent holes in a head panel allow fresh air flow into the heading; and a baffle member at the back of the heading serves to direct the airflow downwardly at the rear of the unit into the apartment. Stale air from the apartment is enabled to move past the baffle member and escape through the heading and vent holes to the outside.

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A window unit adapted to be seated in a window opening of a wall of an apartment, the opening having a ceiling and side walls provided with a shoulder extending into the opening, the window unit including an outer frame having a top wall, a pair of side walls, a pair of double-hung glazed sashes enc

A window unit adapted to be seated in a window opening of a wall of an apartment, the opening having a ceiling and side walls provided with a shoulder extending into the opening, the window unit including an outer frame having a top wall, a pair of side walls, a pair of double-hung glazed sashes encased in the frame between the side walls, and a shoulder depending from a rear end of the top wall defining a stop for a rearwardly disposed one of the sashes, wherein the improvement comprises a heading for the frame, the heading having a head panel extending upwardly from a front end of the top wall, the head panel adapted to be seated at an upper end and sides thereof against the shoulder extending into the opening, a shoulder extending upwardly from the rear end of the top wall, a baffle panel extending in part upwardly relative to the rear end of the top wall and depending in part below the rear end of the top wall and the stop, the baffle panel defining a back to the heading in opposed spaced relation to the head panel, a clip fastened to the upwardly extending shoulder, the clip being engaged with and supporting the baffle panel in spaced relation to the rear end of the top wall, and the head panel having a plurality of vent holes communicating through the head panel with the space between the head panel and the baffle panel, the vent holes serving to allow air flow into the space between the head panel and the baffle panel, and the baffle panel serving to divert the air flow downwardly through the spacing between the baffle panel and the rear end of the top wall to the apartment side of the sashes, wherein the clip is of C-form comprising a back wall having a vertical slot, a fastener extending through the slot and fixing the clip to the upwardly extending shoulder of the top wall, the clip having an upper rearwardly extending arm engaged with an upper end of the baffle panel, the clip having a lower rearwardly extending arm engaged with the baffle panel, the back wall being vertically adjustable in its position relative to the fastener to seat the upper arm of the clip against the ceiling wall of the wall opening, and the upper arm of the clip being adapted to be fastened to the ceiling wall.