United States Stove Company AIR - Manual (Page 21)

21
INSTALLATION B
INSTALLATION C
COLD AIR
RETURN
TO EXISTING
DUCT WORK
WARM AIR
EXISTING
FURNACE
MODEL 1303
FURNACE
FILTER BOX
PLENUM
COLLECTOR BOX
COLD AIR
RETURN
TO EXISTING
DUCT WORK
WARM AIR
EXISTING
FURNACE
MODEL 1303
FURNACE
FILTER BOX
PLENUM ELBOW
PLENUM TOP
(OPTIONAL)