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3M 2091 HEPA Replacement Filter

  • Item #: 3M0004A
  • Ships today !

Shipping Info


3M 2091 HEPA Replacement Filter

3M 2091 Replacement filter fits our 6291 & 6391 3M Respirators. 4 pack (2 pair). Each filter provides N100 quality filtration. This filter will capture 99.97% of liquid and aerosol particles that may also contain oil. This provides HEPA quality filtration that is effective against toxic and non-toxic particles. This P100 classification also exceeds CDC recommendations to prevent the spread of the influenza virus. These filters fit 3M 5000, 6000, and 7000 series facepieces and respirators.

*Please note that 3M recently began printing a manufacture date on the packaging of these filters. The filters are good for 5 years after this date.


  • NIOSH-approved filter bears highest NIOSH P100 rating, with filtration of any particle, including oils
  • Also meets HEPA-level standard with particle filtration efficiency of 99.97% to 0.3 microns
  • Reduces inhalation exposure from allergens, dust, bacteria, viruses, mold, oil and non-oil based mists, and more
  • Recommended for working around dust, molds, pets, garage or workshop
  • Also recommended for many applications in occupational settings
  • Replace filters:
    • if they become damaged, soiled or if increased breathing resistance occurs, or
    • in environments containing only oily aerosols, replace after 40 hours of use or 30 days (whichever is first)
  • Fits the 3M™ 6291 P100 Particulate Respirator sold by National Allergy. Additionally fits 3M's wide variety of half and full facepiece respirator designs:
    • 3M™ 5000 Series¹
    • 3M™ 6000 Series² (including the 6000 Drop Down models)
    • 3M™ 6500 Series² (including the Rugged Comfort 6500 and Rugged Comfort 6500QL)
    • 3M™ 7000 Professional Series³ (including the 7500 and 7800S)
    • 3M™ FF-400 Professional Series³ (including the Ultimate FX FF-400)
  • Contains no Fiberglass
  • Latex free


¹ 502 filter adapter needed.
² 502 filter adapter needed if used as a pre-filter with 6000 Series Chemical Cartridges, such as the 6001 Organic Vapor Cartridges.
³ Respirator must be equipped with bayonet attachment.

Customer Reviews

6 Item(s)

This is a great product
These filters work very well in the garden and when we get heavy smoke from fires.These are the best filters we have found anywhere.
Review by Mary B / (Posted on 7/17/2015)
No review title given
I have horrible allergies, take many meds, and now I don't worry. We live in the Ohio Valley, and yes we have our share. I can go worry free doing a favorite hobby, working in our yard.
Review by Worry free. / (Posted on 4/7/2015)
If u have never try this product it has been the best one i have ever used. i can mow all day an never get out of breath try this you will love it too
Review by janie t. / (Posted on 4/7/2015)
Cut Grass Allergy Free
I greatly appreciate the freedom using the 3M mask with 3M filters gives me when I cut grass. If I were to attempt cutting grass without a mask, I would not last 2 minutes without a lot of issues running nose, sneezing, congestion, etc.. With the mask, I am able to complete the yard work and move on in my day without issue.
Review by Andy / (Posted on 4/7/2015)
I can breath!
This filter worn in a mask helps me breath in smoggy weather and when I cut the grass.
Review by Andrea Low - Allegery sufferer / (Posted on 4/7/2015)
Light weight
These filters are easy to put on the mask and their light as air! Although I do smell some fumes from my lawn mower--I'm cutting grass again due to the mask and these filters! Wonderful filter...enough to ignore the pink color but doing more manly work around the house because of them!
Review by Clayburn Brent HInes / (Posted on 4/7/2015)

Product Questions

I&#39d like to know how long these filters are effective?
does the mask come with filters first order? When filters are replaced are they $10 each or pair?
We work in a heavy dust enviroment, and I need to know how many hrs this filter is rate for and also the micron size it filters