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