23
2" Lip
16" x 20" opening
NOTE: DO NOT PLACE A SCREW IN THE MIDDLE
HOLE OF EITHER SIDE AT THIS POINT.
4. Attach filter holders to sides of enclosure with sheet metal
screws.
1. Attach sides
of filter box to
bottom with (4)
sheet metal
screws per
side.
Be sure sides
are inside
bottom lips and
positioned with
predrilled holes
as illustrated.
Side with no lip
faces back of
furnace.
2. Position top so 2" wide lip is
furned toward furnace. Place
top over sides and secure with
(4) sheet metal screws per side.
3. Center assembly from left to right on back of furnace
with bottom of filter box resting on edge of furnace
bottom.
Be sure filter
box is perfectly
spuare. Mark
position of screw
holes on back of
furnace. Drill
starter holes and
secure assembly
to back of
furnace with self-
tapping screws.
DELUXE FILTER BOX
KIT #C61999
Model 1600/1800
16" x 20" x 1" Filter Required
5. Position filter filler
between side filter
holders and secure
to back of furnace
with two selftapping
screws.
6. Attach blower access
cover to enclosure
with sheet metal
screws.
Insert filter
(not supplied).
7. Attach handle to
filter cover and slide
into position.
8. Connect cold air
return duct to top
flange of filter box.
NOTE: Drill, punch, or
cut access holes as
necessary for entrance
of power cables,
thermostat wire and
domestic hot water coil
pipes, if used.
