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Upflow / Horizontal Furnace Filters
The Upflow/Horizontal furnace when installed horizontally
requires a horizontal filter kit. The filters may be located
remote to the furnace or in the return air duct near the fur-
nace. Check with your dealer for the location of your filters.
An upflow/horizontal furnace in horizontal return air filter
application, as shown, features two 16" x 20" x 1" filters in
the 17-1/2", 21" and 24-1/2" wide furnace cabinets.
To replace filters, remove the filter access door, lift the
filter from the lower bracket and shift the filter to the side
to free the top filter from the bracket and slide the filters
out through the filter access door. After cleaning, replace
the filters in the same manner making sure that the filters
are secured in place in both top and bottom filter brackets.
Replace filter access door.
UPFLOW/HORIzONTAL WITH FILTER KIT
Air filters may also be located outside of the furnace using
a remote filter grille. The filter grille could be in a hall-
way, wall, or in the ceiling. Check with your dealer for the
exact location of your filter and the method of changing the
filters.
UPFLOW FILTER TAbLES
REqUIRED FILTERS - bOTTOM
CAbINET WIDTH
14-1/2"
17-1/2"
21"
24-1/2"
REqUIRED FILTERS - SIDE
CAbINET WIDTH
14-1/2"
17-1/2"
21"
24-1/2"
** ALL 5 TON AIRFLOW MODELS ("960", "961", OR
"972"),
REqUIRE BOTH SIDES OR 1 SIDE AND THE
BOTTOM, OR JUST THE BOTTOM FOR SUFFICIENT
AIRFLOW
32-5063-03
FILTER qUANTITy & SIzE
1 - 14" X 25" X 1"
1 - 17" X 25" X 1"
1 - 20" X 25" X 1"
1 - 24" X 25" X 1"
**
FILTER qUANTITy & SIzE
1 - 17" X 25" X 1"
1 - 17" X 25" X 1"
1 - 20" X 25" X 1"
1 - 24" X 25" X 1"
User's Information
Downflow/Horizontal furnaces are factory supplied with
2 standard size permanent type air filters which may be
located remote to the furnace or in the return air duct.
Check with your dealer for the location of your filters.
A downflow/horizontal furnace return air filter applica-
tion, as shown, features two 14" x 20" x 1" filters in the
17-1/2" wide furnace cabinets; or two 16" x 20" x 1" filters
in the 21" and 24-1/2" wide furnace cabinets.
DOWNFLOW FILTER
DOWNFLOW/HORIzONTAL FILTER
DOWNFLOW FILTER TAbLE
REqUIRED FILTERS - DOWNFLOW
CABINET WIDTH
14-1/2"
17-1/2"
21"
24-1/2"
FILTER QTY AND SIZE
2 - 14" X 20" X 1"
2 - 16" X 20" X 1"
2 - 16" X 20" X 1"
2 - 16" X 20" X 1"
5
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