American Standard CUX1B040A9241A Installation, Operation And Maintenance Manual page 37

UPFLOW (Vertical) FILTER TABLES
REQUIRED FILTERS - BOTTOM
CABINET WIDTH
17-1/2"
21"
24-1/2"
REQUIRED FILTERS - SIDE **
CABINET WIDTH
17-1/2"
21"
24-1/2"
** ON UPFLOW 5 TON AIRFLOW MODELS, IF THE
AIRFLOW REQUIREMENT EXCEEDS 1800 CFM, THESE
MODELS WILL REQUIRE FILTERS ON BOTH SIDES OR
1 SIDE AND THE BOTTOM, OR JUST THE BOTTOM
Downflow/Horizontal furnaces are factory supplied with 2 stan-
dard 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.
DOWNFLOW FILTER
A downflow/horizontal furnace return air filter application, as
shown, features two 14" x 20" x 1" filter in the 17-1/2" wide furnace
cabinets; or two 16" x 20" x 1" filter in the 21" and 24-1/2" wide
furnace cabinets.
Pub. No. 41-5016-12
FILTER QUANTITY & SIZE
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 - 20" X 25" X 1"
1 - 24" X 25" X 1"
DOWNFLOW/HORIZONTAL FILTER
DOWNFLOW (Vertical) FILTER TABLE
REQUIRED FILTERS - DOWNFLOW
CABINET WIDTH FILTER QUANTITY & SIZE
17-1/2"
21"
24-1/2"
TYPICAL RETURN AIR FILTER INSTALLATION IN
UPFLOW MODEL IN HORIZONTAL POSITION
Owner's Information
2 - 16" X 20" X 1"
2 - 16" X 20" X 1"
2 - 16" X 20" X 1"
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