18 x 24 x 1 Filtrete Ultra Allergen Reduction Filter - #2021

3M 2021 | Our#: 110656
6 pack
 
 

18 x 24 x 1 Filtrete® Ultra Allergen Reduction Filter from 3M - #2021See all filters in this size

  • MERV 11 Rated
  • Change Every 3 Months
  • 18x24x1" Nominal
  • 17¾x23¾x⅞" Actual
$126.83 $164.99
Case of 6 Filters, $21.14 ea
In Stock
Ships Today
Est. Delivery By Apr. 30th


18" X 24" X 1"
Filtrete® Ultra Allergen Reduction Filter from 3M - #2021 - 6 pack

The Filtrete® Ultra Allergen Reduction Filter carries a 3M Microparticle Performance Rating (MPR) of 1500 - roughly equivalent to a MERV 12 rating

Click here for detailed comparison of 3M Filtrete® 1" Filters

Features:

  • Meets the American Lung Association® Health House® Indoor Air Quality Guidelines
  • No unnecessary antimicrobial chemicals added; Filtrete filtering material will not support the growth of bacteria, mold, mildew or fungi in normal use
  • Contains electrostatically charged media to filter and attract particles in the air
90% effective at capturing large allergens like:
  • Pollen
  • Mold spores 
  •  Dust mite debris
Attracts and captures microscopic allergens like:
  • Smoke
  • Pet dander
  • Household dust
  • Smog
  • Bacteria
  • Particles that carry viruses
* This filter should be changed at least every 3 months.  Certain conditions in your home will significantly add particles to the air - this will cause the filter to capture more particles, shortening it's life to less than 3 months.  These conditions would include: dirty ductwork, pets, construction work, sanding projects, tobacco smoke, burning candles, fireplaces and wood-burning stoves.

WHY USE MPR RATHER THAN MERV RATING?

The  Heating, Ventilating and Air Conditioning (HVAC) industry uses the ASHRAE 52.2 Standard, which assigns a Minimum Efficiency Reporting Value (MERV) to a filter. One part of MERV reports a filter's ability to capture medium to large particles between 1 and 10 microns. This value is helpful in comparing the performance of different filters but it is not adequate alone because particles greater than one micron make up only about 1% of the contaminants in your indoor air.

Another part of MERV addresses submicron particles. 3M calls this the MPR or Microparticle Performance Rating. It measures a filter's ability to capture particles between 0.3 and 1.0 micron. Based on independent laboratory tests, 3M's MPR measures a filter's ability to capture submicron particles that make up 99% of the particles in the air, such as bacteria, smoke and smog.

REVIEW SNAPSHOT®

by PowerReviews
3M18 x 24 x 1 Filtrete Ultra Allergen Reduction Filter - #2021
 
5.0

(based on 3 reviews)

100%

of respondents would recommend this to a friend.

Pros

  • Easy to install (3)
  • Good size/fit (3)

Cons

    Best Uses

    • Central AC (3)
    • Central heating (3)

    Reviewed by 3 customers

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    5.0

    A/C filters

    By None

    from Los Angeles, Ca.

    About Me Renter

    Verified Buyer

    Pros

    • Durable
    • Easy To Install
    • Good Fit

    Cons

      Best Uses

      • Central AC
      • Central Heating

      Comments about 3M 18 x 24 x 1 Filtrete Ultra Allergen Reduction Filter - #2021:

      [...] Great product. Thanks

       
      5.0

      18" X 24" X 1" Filtrete® Ultra Allergen

      By Fredxian

      from Shreveport, LA

      About Me Homeowner

      Verified Buyer

      Pros

      • Easy To Install
      • Good Fit

      Cons

        Best Uses

        • Central AC
        • Central Heating
        • Home

        Comments about 3M 18 x 24 x 1 Filtrete Ultra Allergen Reduction Filter - #2021:

        This size filter is hard to find locally. You guys are life savers. Easy to order, [...].Thanks,

        (1 of 1 customers found this review helpful)

         
        5.0

        Excellent!

        By Johnny

        from Chantilly Virginia

        About Me Homeowner

        Verified Buyer

        Pros

        • Compact
        • Durable
        • Easy To Install
        • Good Fit

        Cons

          Best Uses

          • Central AC
          • Central Heating
          • Home

          Comments about 3M 18 x 24 x 1 Filtrete Ultra Allergen Reduction Filter - #2021:

          The Ultra Filter by 3M works as advertised and has helped with allergies. We can tell the difference.

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