3M Filtrete Allergen Defense 20 in x 25 in x 4 in MPR 1000 MERV 11 pleated air filters, 2-pack
Filtrete 20x25x4 Air Filter, MPR 1000, MERV 11, Allergen Defense 12-Month Deep Pleated 4-Inch Air Filters, 2 Filters
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Filtrete 20x25x4 Air Filter, MPR 1000, MERV 11, Allergen Defense 12-Month Deep Pleated 4-Inch Air Filters, 2 Filters

Key item features

  • 1000 MPR has a rating of MERV 11, ATTRACTS AND CAPTURES particles such as lint, pollen, dust, pet dander, smoke and smog, DESIGNED WITH EXCLUSIVE Filtrete Brand 3-in-1 technology from 3M
  • to trap unwanted air particles while letting cleaner air flow through, OUTPERFORMS FIBERGLASS, WASHABLE AND NON-ELECTROSTATIC 3-month pleated 1 in. home air filters for your furnace, air
  • conditioner or HVAC system, The higher the MPR, the more microparticles--such as pollen, pet dander, smoke, bacteria and viruses--your filter will capture from the air passing through it
Current price is $46.00
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4.7 out of 5 stars
stars348 ratings329 reviews
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Showing 1-3 of 329 reviews

Feb 27, 2016
mikemast44
5 out of 5 stars review

Been using for over 16 years!

Bought my home new in 2000 and to this day its the only filter I've ever used and trust. I change about every 3 months (more often in hot summers and less in mild spring when not in use). Highly recommend this product. My brother and mother also use 3M filters for many years in there homes too.

Review from filtrete.com
Helpful?1ZMMNBHIUH681112002362
Oct 5, 2010
FilterFitter
5 out of 5 stars review

Whiteness Helps You See Performance

The filter does a great job as evidenced by how infrequently we need to dust the house, and by how little dust and lint are on the blower fan blades of the AC/furnace. Beyone performance, one attibute I like is that the filter is super bright and white out of the package. Later when you remove it, you'll see how gray it has become from catching all the particles in the air. Separately, if the filter comes out curved instead of straight, you've left it in too long and were reducing the efficiency of your system. The reminder stickers help keep you on schedule.

Review from filtrete.com
Helpful?1ZMMNBHIUH681112002362
Oct 24, 2025
Mymy69
5 out of 5 stars review

Best purchase ever they are a 9

I try to always run the Filtrete 1000 Allergen Defense. It is a true life savor.

Review from filtrete.com
Helpful?1ZMMNBHIUH681112002362