Honeywell Merv 11 Deep Pleated Media Filter 20 x 20
Price:From $30.00 to $120.00
Product Options
  16 x 20 16 x 25 20 x 20 20 x 25

Genuine FC100A1011 Honeywell media filter. Replacement filter for models F200, F100, F35F, F25A. Measured 20 x 19¾ x 4½ inch. ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers) rated MERV 11.

Replaces 203721 used in F25F1018.
Replaces FC35A1019 used in F35F1016.


Description 20 x 20 Media Air Filter
Aplication Replacement Filter FC100A1011
Dimensions 20 x 20 in. (508 mm x 508 mm)
Efficiency Standard Efficiency ratings based on ASHRAE Standard 52.2-1999.
Efficiency Standard Efficiency ranges are defined for:
Small particles, E1=0.3 to 1.0 microns,
Medium particles, E2=1.0 to 3.0 microns,
Large particles, E3=3.0 to 10.0 microns.
Franctional Standard E1=25%, E2=62%, E3=85%
Minimum Efficiency Reporting Value
(Media Filters Only)
Static Pressure Drop
(in. w.c.)
0.23 at 500 FPM
Type of Air Cleaner Media Air Cleaner
FC100A1011 is used in F100B2024, F100F1020, F100F2036, F150E1018, F200F2036, F200E1011

Upgrade to F300E Electronic Air Cleaner

The F100-F200 steel frame can be upgraded to the F300E1027 electronic air cleaner. The frame has knock-outs to accommodate the F300E power box. The F100-F200 frame is the same as the F300 frame, allowing the cells, prefilters and postfilters slide in to the F100-F200 frame. The F200 frame is the same as the F100 frame.

Purchase the F300E1027 and move the components to your existing frame. The F300 cells, prefilters, and postfilters slide in to the F100 or F200 frame, replacing the FC100A1011.

The photo below shows the F100 or F200 frame. The frame has knock-outs that allow the cell contacts to protrude through. Remove the knock-outs to install the F300 power box. The power box simply mounts with two screws and has a 5ft cord that plugs in to a standard 120v outlet.

Honeywell f200f to f300e upgrade

F100 versus F200 versus F300

Honeywell uses the same chassis for the F100, F200, and F300. The chassis is made in four sizes 16x20, 16x25, 20x20, 20x25. They all accept the same media filters or can be fitted with electronic cells.

The FC40R is the basic register filter rated at Merv 10. The F100 model comes with a filter rated at Merv 11. The F100 filter will also fit in the F200.

The F200 model uses the same chassis as the F100. The F200 comes with a filter rated at Merv 13 . The F200 filter will also fit the F100 model.

The earlier model F35F and F25F also used the same chassis and door as the F100. The F25 and F35 used the current F100 or F200 replacement filters.

BEST 15 TrueCLEAN Air Cleaners   99%
BETTER 12-14 F300E Electronic Air Cleaner   98%  
BETTER 13 F200F Media Air Cleaner   97%  
GOOD 11 F100F Media Air Cleaner 96%    
GOOD 10 FC40R Return Grille Air Filters   86%    
BASIC 1-4 1" Fiberglass Filter 20%      

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