*Please be advised that some larger filters require an additional cost (see dropdown window above).
- Size Actual Dimension
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12x24x4 11.375" x 23.375" x 3.625"
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16x20x4 15.5" x 19.5" x 3.625"
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16x25x4 15.5" x 24.5" x 3.625"
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18x24x4 17.375" x 23.375" x 3.625"
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20x20x4 19.5" x 19.5" x 3.625"
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20x24x4 19.375" x 23.375" x 3.625"
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20x25x4 19.5" x 24.5" x 3.625"
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24x24x4 23.375" x 23.375" x 3.625"
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25x29x4 24.375" x 28.375" x 3.625"
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1" MERV 13 Furnace & AC Air Filter by Filters Fast® - 6-Pack
Frigidaire FRPFUFV2 Replacement for Frigidaire FRUFVS - 2-Pack
BioStrike CFF Ceiling Fan Air FilterThe 4" MERV 11 Furnace & AC Air Filter by Filters Fast® - 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.
Note: These filters do not contain fiberglass.
Specifications:
- Brand: Filters Fast®
- Part Number: FF4M11
- Pack Size: 3
- Filter Life: 6 - 12 Months
- MERV Rating: 11
- Filter Type: Electrostatic pleated
- Material: Synthetic
- For commercial and residential use
Available Sizes:
The 4" MERV 11 Furnace & AC Air Filter by Filters Fast® 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 | 15.5x19.5x3.625 | PF11.0416203PFF |
| 16x25x4 Air Filter | 15.5x24.5x3.625 | PF11.0416253PFF |
| 18x24x4 Air Filter | 17.375x23.375x3.625 | PF11.0418243PFF |
| 20x20x4 Air Filter | 19.5x19.5x3.625 | PF11.0420203PFF |
| 20x24x4 Air Filter | 19.375x23.375x3.625 | PF11.0420243PFF |
| 20x25x4 Air Filter | 19.5x24.5x3.625 | PF11.0420253PFF |
| 24x24x4 Air Filter | 23.375x23.375x3.625 | PF11.0424243PFF |
| 25x29x4 Air Filter | 24.375x28.375x3.625 | PF11.0425293PFF |
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 4" MERV 11 Furnace & AC Air Filter by Filters Fast®?
- Once your air filters arrive, gather your supplies including a ladder (if needed,) safety goggles, gloves, a mask, and a disposable bag.
- Remove the metal grate from your air return.
- Carefully remove the used air filter and place it immediately and gently into the disposable bag. Then tie the bag sealed.
- Place the new air filter in place of the filter you just removed and replace the metal grille.
How often should you replace the 4" MERV 11 Furnace & AC Air Filter by Filters Fast®?
- Changing your 4" MERV 11 Furnace & AC Air Filter by Filters Fast® is a very quick and easy process that should be done once every six to twelve months.
What contaminants does the 4" MERV 11 Furnace & AC Air Filter by Filters Fast® reduce?
-
The 4" 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 4" MERV 11 Furnace & AC Air Filter by Filters Fast® - 3-Pack is the correct replacement for the following part numbers:
Customer Reviews:
product works well as filter for my heating element
Collected by Trustpilot.comWell made products
Collected by Trustpilot.comWork great with our system.
Collected by Trustpilot.comErroneous measurements! Smaller than 16x20x4 by close to 1/2"
Collected by Trustpilot.com10 characters
Collected by Trustpilot.comIt was supposed to replace and fit my specific Honeywell filter and it wasn't even close. It is narrower and sits at an angle in my return. I'm using it but will never buy from FiltersFast again. I'll stick with the much more expensive Honeywell filter.
Collected by Trustpilot.comGreat product but a delayed delivery
Collected by Trustpilot.comDoes the job as described, no problems over the 3-4 years in new ac system.
Collected by Trustpilot.comGood srevice
Collected by Trustpilot.comFast and good quality
Collected by Trustpilot.comGreat used your product for years.
Collected by Trustpilot.comPay close attention to the specs as these are not the full size. Much smaller
Collected by Trustpilot.comThanks for your speedy delivery.
Collected by Trustpilot.comGreat service - good filters
Collected by Trustpilot.comExcellent for dust control
Collected by Trustpilot.comQuick and dependable! The filter club makes it easy to have filters on hand.
Collected by Trustpilot.comQuality filters @ affordable prices and good discounts throughout the year!
Collected by Trustpilot.comExcellent products, comparable to the brand names in performance yet cost less
Collected by Trustpilot.comThey are not 4” thick. The actual dimension is 3 1/2”.
Collected by Trustpilot.comWork great! Thanks
Collected by Trustpilot.comProduct Availability
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