MERV 11 Filters Fast® 4" AC and Furnace Air Filters 3-pack

FF4M11

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Only $23.65 per Filter
$70.95 ea
FF4M11 Sizes :
$70.95/3-Pack
Retail:$80.99
You Save: 12%
Ships in 1 to 2 business days.

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The Filters Fast® FF4M11 3-Pack is a set of MERV 11 filters that effectively reduce pollen, dust, pet dander, mold spores, dust mites and other allergens from indoor air. Removing these airborne particles can help improve allergies and alleviate sinus irritation that can cause watery eyes, itchy throat, coughing, and sneezing. The MERV 11 filter media is electrostatically charged and constructed with spun micro-fiber that also will not retain moisture, which can lead to microbial growth. Aside from the health benefits, these HVAC filters will also extend the life of your heating and cooling system by making it work more efficiently.

Filters Fast® FF4M11 3-Pack Filter Specifications:

  • Part Number: FF4M11
  • Pack Size: 3 Filters
  • MERV Rating: 11
  • Filter Type: Electrostatic pleated
  • Material: Synthetic
  • Replace every 6-12 months
  • For commercial and residential use
  • Note: These filters do not contain fiberglass.

The Filters Fast® FF4M11 3-Pack 4" Air Filter is available in the following sizes:

Nominal Size Actual Size Alternate Part Number
12x24x4 Air Filter 11.375x23.375x3.625 PF11.0412243PFF
16x20x4 Air Filter 15.375x19.375x3.625 PF11.0416203PFF
16x25x4 Air Filter 15.375x24.375x3.625 PF11.0416253PFF
18x24x4 Air Filter 17.375x23.375x3.625 PF11.0418243PFF
20x20x4 Air Filter 19.375x19.375x3.625 PF11.0420203PFF
20x24x4 Air Filter 19.375x23.375x3.625 PF11.0420243PFF
20x25x4 Air Filter 19.375x24.375x3.625 PF11.0420253PFF
24x24x4 Air Filter 23.375x23.375x3.625 PF11.0424243PFF
25x29x4 Air Filter 24.375x28.375x3.625 PF11.0425293PFF

NOTE: If you don't see your size, order a custom made air filter! Custom made air filters do not come individually wrapped. Please be advised that some larger filters require an additional cost (see dropdown window above).

Additional Resources:

For more information on air filter efficiency ratings, check out our resources below!

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