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The FiltersFast FF4M8 3-Pack is a set of MERV 8 filters that effectively reduces contaminants 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. The MERV 8 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 FF4M8 3-Pack Filter Specifications:

• Part Number: FF4M8
• Pack Size: 3 Filters
• MERV Rating: 8
• Filter Type: Electrostatic pleated
• Material: Synthetic
• Replace every 3 months
• For commercial and residential use

The FiltersFast FF4M8 3-Pack 4" Air Filter is available in the following sizes:

         Nominal Size            Actual Size

• 16x20x4 Air Filter   15-1/2 x 19-1/2 x 3-1/2
• 16x25x4 Air Filter   15-3/8 x 24-3/8 x 3-5/8
• 18x24x4 Air Filter   17-1/2 x 23-1/2 x 3-1/2
• 20x20x4 Air Filter   19-1/2 x 19-1/2 x 3-1/2
• 20x25x4 Air Filter   19-1/2 x 24-1/2 x 3-1/2
• 24x24x4 Air Filter   23-5/16 x 23-5/16 x 3-5/8
• 25x29x4 Air Filter   24-1/2 x 28-1/2 x 3-1/2

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: 3 | Average Rating: 4.7 / 5.0

renatefischer732018-07-20

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

Collected by FiltersFast.com

jackiehouck2018-07-18

Excellent experience filters delivered on time & complete!

Collected by FiltersFast.com

Paul2009-04-20

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

Collected by FiltersFast.com