Wall with duct and access openings to east side air supply tunnel at east end of south cross tunnel under narthex.

Wall with duct and access openings to west side air supply tunnel at west end of south cross tunnel under narthex.

Far north end of center air return tunnel where conduit enters crawl space under chancel; center wall opening is for return air feeding the air handling blowers in the mechanical equipment room in basement.

Center air return tunnel under sanctuary looking from north (chancel) end towards south (basement) end of the tunnel.

Looking south from center air return tunnel.

FOREGROUND - threading pipe for water supply to air handling units.
BACKGROUND - installing hanger brackets to support upper rail for folding partitions between sanctuary and narthex.

Threaded pipe placed under chancel awaiting installation.

Painting the balcony ceiling.