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


MERV 11 FiltersFast 4" AC and Furnace Air Filters 3-pack
Made In USA Icon guarantee
Only $23.32 per filter
Retail: $79.99 /ea
You Save: 13%
As low as
Retail: $79.99
You Save: 13%

FF4M11 Sizes :

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Product Information

The FiltersFast 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.

FiltersFast 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 FiltersFast FF4M11 3-Pack 4" Air Filter is available in the following sizes:

Nominal Size Actual Size Alternate Part Number
12x24x4 Air Filter 11-3/8 x 23-3/8 x 3-5/8 PF11.0412243PFF
16x20x4 Air Filter 15-1/2 x 19-1/2 x 3-5/8 PF11.0416203PFF
16x25x4 Air Filter 15-1/2 x 24-1/2 x 3-5/8 PF11.0416253PFF
18x24x4 Air Filter 17-3/8 x 23-3/8 x 3-5/8 PF11.0418243PFF
20x20x4 Air Filter 19-1/2 x 19-1/2 x 3-5/8 PF11.0420203PFF
20x24x4 Air Filter 19-3/8 x 23-3/8 x 3-5/8 PF11.0420243PFF
20x25x4 Air Filter 19-1/2 x 24-1/2 x 3-5/8 PF11.0420253PFF
24x24x4 Air Filter 23-3/8 x 23-3/8 x 3-5/8 PF11.0424243PFF
25x29x4 Air Filter 24-3/8 x 28-3/8 x 3-5/8 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!



Customer Reviews:

Total Reviews: 11 | Average Rating: 4.5 / 5.0

These are a great value for the money. The air quality is immediately better when we put them in.

Collected by

Nice filtration at a fair price

Collected by

Just didn't fit!

Collected by

Delivered on time just what I ordered

Collected by

I' ve been purchasing 4 inch filters for some time. Fast Filters is FAST at very low cost. Their ' packaging' for shipping leave a bit to be desired. Numerous times the filters arrived ' crushed' on one end or the other from shipping. To their credit, they have responded by replacing the damaged filters.

Collected by

Filters came fast and in good condition

Collected by

I ordered these filters, and about 4 days later, they were on my doorstep! They fit well, they filter the air well, and are an excellent value for what you pay.

Collected by

The filters are precisely sized, do an excellent filtering job and are long lasting. This is the second time I have ordered them from Filters Fast...

Collected by

I received my 3-pack of filters and they were just what i needed for my system at an afordable price which is about 1/2 of what i would have paid at lowes (the only big box store that carries that size filter in my town).

Collected by

I' ll be a repeat shopper!

Collected by

These are great and very reasonably priced filters. Iíve been using them for the past nine years.

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