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FiltersFast 4-inch MERV 8 Air Filters, 3-pack


FiltersFast 4-inch MERV 8 Air Filters, 3-pack
Made In USA
Only $14.65 per filter
FF4M8 Sizes :

Retail: $49.99 /ea
You Save: 12%
As low as
Retail: $49.99
You Save: 12%

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Product Information

The FiltersFast FF4M8 is compatible with top name brand AC filters such as:

  • Aprilaire
  • Space-Gard
  • Trion Air Bear
  • Honeywell

Sizes are 20x25x4, 16x25x4, and 20x20x4.

The FiltersFast 4-inch MERV 8 Air Filters, 3-pack have a MERV 8 rating and can be used in a variety of applications including residential and commercial. MERV, or Minimum Efficiency Reporting Value, indicates when a filter will be least efficient. So the higher the MERV rating, the more efficient the filter. It should be noted that most fiberglass spun filters such as those found in your local grocery store are usually only a MERV 1 or MERV 2. This can affect the efficiency and air flow of your heating and cooling system, causing it to work harder to produce the same air flow and costing you more money!

FiltersFast Air Filters MERV 8 effectively reduce pollen, dust, pet dander and other allergens from your indoor air. Removing these airborne particles can help improve allergies and alleviate sinus irritation that can cause watery eyes, itchy throat, coughing, and sneezing. Aside from the health benefits, quality air conditioning filters will also extend the life of your heating and cooling system by making it work more efficiently

FiltersFast Air Filters are an economical alternative if you're looking for a quality air filter without paying a premium price!

FiltersFast four inch air filters contain 8 pleats per linear foot which creates a greater surface area to catch airborne particles. These air filters should be changed every 3 months for optimum performance.

FiltersFast 4-inch MERV 8 Air Filters, 3-Pack Specifications:

  • Part Number: FF4M8
  • 3 pack
  • MERV 8
  • 8 pleats per linear foot
  • Change every 3 months

The FiltersFast 4" Air Filters are available in the following sizes:

Nominal Size
Actual Size

16x25x4 15-1/2x24-1/2x3-1/2
16x20x4 15-1/2x19-1/2x3-1/2
16x25x4 15-1/2x24-1/2x3-9/16
18x24x4 17-1/2x23-1/2x3-1/2
20x24x4 19-3/8x23-3/8x3-1/2
20x25x4 19-1/2x24-1/2x3-9/16
24x24x4 23-5/16x23-5/16x3-5/8
25x29x4 24-1/2x28-1/2x3-1/2

Don't see the size you need? Let us know, we can special order it for you! Email us at [email protected]

The chart below will show you what you can remove with a MERV 13 air filter, a MERV 11 air filter, or a MERV 8 air filter.

MERV Air Filter Chart


Product Reviews :

Average rating : 4 Star Rating
Number of reviews : 4
Write a review
  • 3 Star Rating
    tilliepeople  Thursday, July 26, 2018

    A little loose in the bracket but you can feel the difference clean filters make.

  • 5 Star Rating
    very satisfied
    renatefischer73  Friday, July 20, 2018

    Great product, will certainly do more business with this company!

  • 5 Star Rating
    Happy customer
    jackiehouck  Wednesday, July 18, 2018

    Excellent experience filters delivered on time &amp complete!

  • 4 Star Rating
    Good value, check size!
    Paul - Maryland  

    These work for me, and are a very good value, but be sure they work for you. Actual measurement for the 16 x 25 x 4 filter is 15 1/2 x 24 1/2 x 3 9/16, which makes them very different in size than many other advertised 16 x 26 x 4, which it typically 15 3/4 x 24 3/4 x 4 3/8

" Thank you for your expert service when helping me get the proper filters for my old pool and filter system. The new ones are perfect and work very well. All the best! " - Jim, Alamo, CA
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