1" MERV 11 Furnace & AC Air Filter by Filters Fast® - 6-Pack
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actual size

*Please be advised that some larger filters require an additional cost (see dropdown window above).

  • Size Actual Dimension
  • 08x08x1 8" x 8" x 0.75"
  • 10x10x1 9.75" x 9.75" x 0.75"
  • 10x20x1 9.75" x 19.75" x 0.75"
  • 10x24x1 9.5" x 23.5" x 0.75"
  • 12x12x1 11.75" x 11.75" x 0.75"
  • 12x18x1 11.75" x 17.75" x 0.75"
  • 12x20x1 11.75" x 19.75" x 0.75"
  • 12x24x1 11.75" x 23.75" x 0.75"
  • 12x25x1 11.75" x 24.75" x 0.75"
  • 12x30x1 11.75" x 29.75" x 0.75"
  • 12x36x1 11.5" x 35.5" x 0.75"
  • 13x22x1 13" x 21.5" x 0.75"
  • 14x14x1 13.75" x 13.75" x 0.75"
  • 14x15.5x1 14" x 15.5" x 0.75"
  • 14x18x1 13.75" x 17.75" x 0.75"
  • 14x20x1 13.75" x 19.75" x 0.75"
  • 14x24x1 13.75" x 23.75" x 0.75"
  • 14x25x1 13.75" x 24.75" x 0.75"
  • 14x30x1 13.75" x 29.75" x 0.75"
  • 15x20x1 14.75" x 19.75" x 0.75"
  • 16x16x1 15.75" x 15.75" x 0.75"
  • 16x20x1 15.75" x 19.75" x 0.75"
  • 16x24x1 15.75" x 23.75" x 0.75"
  • 16x25x1 15.75" x 24.75" x 0.75"
  • 16x30x1 15.75" x 29.75" x 0.75"
  • *16x32x1 15.5" x 31.5" x 0.75"
  • 17.5x23.5x1 17.5" x 23.5" x 0.75"
  • 18x18x1 17.75" x 17.75" x 0.75"
  • 18x20x1 17.75" x 19.75" x 0.75"
  • 18x22x1 17.75" x 21.75" x 0.75"
  • 18x24x1 17.75" x 23.75" x 0.75"
  • 18x25x1 17.75" x 24.75" x 0.75"
  • 18x30x1 17.75" x 29.75" x 0.75"
  • 20x20x1 19.5" x 19.5" x 0.75"
  • 20x21.5x1 20" x 21.5" x 0.75"
  • 20x21x1 19.75" x 20.75" x 0.75"
  • 20x22x1 19.75" x 21.75" x 0.75"
  • 20x24x1 19.75" x 23.75" x 0.75"
  • 20x25x1 19.75" x 24.75" x 0.75"
  • 20x30x1 19.875" x 29.875" x 0.75"
  • 21.5x23.2x1 21.5" x 23.25" x 0.75"
  • *22x22x1 21.75" x 21.75" x 0.75"
  • 23.5x23.5x1 23.5" x 23.5" x 0.75"
  • 24x24x1 23.75" x 23.75" x 0.75"
  • 24x30x1 23.875" x 29.875" x 0.75"
  • 25x25x1 24.75" x 24.75" x 0.75"
  • *30x30x1 29.5" x 29.5" x 0.75"
  • *30x36x1 29.5" x 35.5" x 0.75"
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1" MERV 11 Furnace & AC Air Filter by Filters Fast® - 6-Pack


Only $12.83 per Filter
Retail: $89.99 /ea
You Save: 14%
As low as
Retail: $89.99
You Save: 14%
M11 6pk Sizes - Some Sizes Have Additional Costs :
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The 1" MERV 11 Furnace & AC Air Filter by Filters Fast® - 6-Pack is a set of MERV 11 AC and Furnace Air 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 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.

Note: These filters do not contain fiberglass.


  • Brand: Filters Fast®
  • Part Number: FFM11
  • Pack Size: 6
  • Filter Life: 1 - 3 Months
  • MERV Rating: 11
  • Filter Type: Pleated
  • Material: Synthetic
  • For residential use only

Available Sizes:

The Filters Fast® FFM11 6-Pack 1" Air Filter is available in the following sizes:

Nominal Size Actual Size Alternate Part Number
08x08x1 Air Filter 8.0x8.0x.75 PF11.010808A6PFF
09x11x1 Air Filter 09x11x.75 PF11.010911A6P
10x10x1 Air Filter 9.75x9.75x.75 PR11.011010PFF
10x16x1 Air Filter 9.75x15.75x.75 PF11.0110166PFF
10x20x1 Air Filter 9.75x19.75x.75 PR11.011020PFF
10x24x1 Air Filter 9.75x23.75x.75 PR11.011024PFF
10x25x1 Air Filter 9.75x24.75x.75 PF11.0110256PFF
10x30x1 Air Filter 9.75x29.75x.75 PF11.0110306PFF
12x12x1 Air Filter 11.75x11.75x.75 PR11.011212PFF
12x15x1 Air Filter 11.75x14.75x.75 PF11.0112156PFF
12x16x1 Air Filter 11.75x15.75x.75 PF11.0112166PFF
12x18x1 Air Filter 11.75x17.75x.75 PR11.011218PFF
12x20x1 Air Filter 11.75x19.75x.75 PR11.011220PFF
12x22x1 Air Filter 11.75x21.75x.75 PF11.0112226PFF
12x30x1 Air Filter 11.75x29.75x.75 PR11.011230PFF
14x14x1 Air Filter 13.75x13.75x.75 PR11.011414PFF
14x18x1 Air Filter 13.75x17.75x.75 PR11.011418PFF
14x20x1 Air Filter 13.75x19.75x.75 PR11.011420PFF
14x22x1 Air Filter 14x22x.75 PF11.011422A6P
14x24x1 Air Filter 13.75x23.75x.75 PR11.011424PFF
14x25x1 Air Filter 13.75x24.75x.75 PR11.011425PFF
14x30x1 Air Filter 13.75x29.75x.75 PR11.011430PFF
15x20x1 Air Filter 14.75x19.75x.75 PR11.011520PFF
15x25x1 Air Filter 14.75x24.75x.75 PF11.0115256PFF
15x30x1 Air Filter 14.75x29.75x.75 PF11.0115306PFF
16x16x1 Air Filter 15.75x15.75x.75 PR11.011616PFF
16x18x1 Air Filter 15.75x17.75x.75 PF11.0116186PFF
16x20x1 Air Filter 15.75x19.75x.75 PR11.011620PFF
16x24x1 Air Filter 15.75x23.75x.75 PR11.011624PFF
16x25x1 Air Filter 15.75x24.75x.75 PR11.011625PFF, PF1625, glasfloss16251, ZLP16251, Clean Comfort CCF-11-1625-1
16x30x1 Air Filter 15.75x29.75x.75 PR11.011630PFF
*16x32x1 Air Filter 15.75x31.75x.75 PR11.011632PFF
17.5x21x1 Air Filter 17.5x21x.75 PF11.0117.521A6P
18x18x1 Air Filter 17.75x17.75x.1 PR11.011818PFF
18x20x1 Air Filter 17.75x19.75x.75 PR11.011820PFF
18x22x1 Air Filter 17.75x21.75x.75 PR11.011822PFF
18x24x1 Air Filter 17.75x23.75x.75 PR11.011824PFF
18x25x1 Air Filter 17.75x24.75x.75 PR11.011825PFF
18x30x1 Air Filter 17.75x29.75x.75 PR11.011830PFF
20x20x1 Air Filter 19-3/4x19-3/4x 3/4 PR11.012020PFF
20x21x1 Air Filter 19.75x20.75x.75 PR11.012021PFF
20x21.5x1 Air Filter 19.75x21.5x.75 PF11.012021.5A6PFF
20x22x1 Air Filter 19.75x21.75x.75 PR11.012022PFF
20x24x1 Air Filter 19.75x23.75x.75 PR11.012024PFF
20x25x1 Air Filter 19.75x24.75x.75 PR11.012025PFF
20x26x1 Air Filter 20x26x.75 PF11.012026A6P
20x30x1 Air Filter 19.75x29.75x.75 PR11.012030PFF
*22x22x1 Air Filter 21.75x21.75x.75 PR11.012222PFF
22x24x1 Air Filter 22x24x.75 PF11.012224A6PFF
24x24x1 Air Filter 23.75x23.75x.75 PR11.012424PFF
24x30x1 Air Filter 23.75x29.75x.75 PR11.012430PFF
25x25x1 Air Filter 24.75x24.75x.75 PR11.012525PFF
28x30x1 Air Filter 27.5x29.5x.75 PF11.0128306P
*30x36x1 Air Filter 29.5" x35.5" x.75" PR11.013036PFF

*Additional Handling Fee: Please be advised that some larger filters require an additional cost to offset high shipping charges.

Custom Sizes:

  • If you don' t see your size, order a custom made air filter! Custom made air filters do not come individually wrapped.

How do you install the 1" MERV 11 Furnace & AC Air Filter by Filters Fast®?

  1. Once your air filters arrive, gather your supplies including a ladder (if needed,) safety goggles, gloves, a mask, and a disposable bag.
  2. Remove the metal grate from your air return.
  3. Carefully remove the used air filter and place it immediately and gently into the disposable bag. Then tie the bag sealed.
  4. Place the new air filter in place of the filter you just removed and replace the metal grille.

How often should you replace the 1" MERV 11 Furnace & AC Air Filter by Filters Fast®?

  • Changing your 1" MERV 11 Furnace & AC Air Filter by Filters Fast® is a very quick and easy process that should be done once every one to three months.

What contaminants does the 1" MERV 11 Furnace & AC Air Filter by Filters Fast® reduce?

  • The 1" MERV 11 Furnace & AC Air Filter by Filters Fast® is a MERV 11 air filter, which means that it reduces the following contaminants:

    • Dust
    • Pollen
    • Mold Spores
    • Pet Dander
    • Dust Mites
    • Smoke & Smog
    • Other Common Airborne Allergens


Compatible Parts:

The 1" MERV 11 Furnace & AC Air Filter by Filters Fast® - 6-Pack is the correct replacement for the following part numbers:

Part Number
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Customer Reviews:

Total Reviews: 166 Average Rating: 4.8 / 5.0

Filtersfast Reviews on Trust Pilot external site
Rose Riley2024-05-20

Work fine for my home

Collected by Trustpilot.com
Robert A Bufano2024-05-13

Very happy with your product filters

Collected by Trustpilot.com

They work the way they're suppose to work. Service is excellent.

Collected by Trustpilot.com

They're reasonable rigid and they trap dust judging by what they look like when replaced. That's pretty much what I need from a filter!

Collected by Trustpilot.com
Linn Newbold2024-03-12

This is an amazing product that works extremely well with my A/C unit, at a great value

Collected by Trustpilot.com
Jeffrey Factor2024-02-15

Good value

Collected by Trustpilot.com
David Heath2024-02-06

good for stocking up

Collected by Trustpilot.com
Gary Harmon2024-01-08

Proves to be effective for pet dander. Good value.

Collected by Trustpilot.com

Fast and reliable service.

Collected by Trustpilot.com

The automatic sending of the product really makes things easy!

Collected by Trustpilot.com
Joseph Hannon2023-11-26

Good quality

Collected by Trustpilot.com
Kenneth S2023-11-22

Good product

Collected by Trustpilot.com

Great product and fulfills my needs for cleaner air in my home.

Collected by Trustpilot.com
Edward D2023-09-06

Everything worked out well

Collected by Trustpilot.com
Michael H2023-08-31

Reorder number 3

Collected by Trustpilot.com
Newton Brooks2023-08-26

Excellent. Very pleased in every way.

Collected by Trustpilot.com
L Gillingham2023-08-19

Love these filters...air-quality inside my home has improved greatly!

Collected by Trustpilot.com
Patrica Cleland2023-08-18


Collected by Trustpilot.com
Michele G2023-08-12

Products good. Auto ship dependable

Collected by Trustpilot.com

Air conditioner Have to change each month due to cats

Collected by Trustpilot.com

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