3M 2091 vs Honeywell North 7580P100: P100 Filter Comparison (2026)
The 3M 2091 and the Honeywell North 7580P100 both carry the same NIOSH P100 rating — 99.97% filtration efficiency, oil-proof — and protect against exactly the same category of particulate hazards. The only decision is which respirator system you already own: the 3M 2091 mounts on the 3M bayonet, and the 7580P100 mounts on the North bayonet. They are not cross-compatible, and there is no technical reason to prefer one over the other if you are starting from scratch. If you already run North respirators, the 7580P100 is your filter; if you run 3M 6000, 6500QL, or 7500 series masks, the 2091 is your filter.
Quick Answer: Which P100 Filter Should You Buy?
Both filters deliver identical NIOSH P100 protection. Buy the 3M 2091 if you own a 3M 6000, 6500QL, or 7500 series respirator. Buy the Honeywell North 7580P100 if you own a North 5500, 7700, 5400, or 7600 series respirator. Connection compatibility is the entire decision.
Buy the 3M 2091 from WC Safety or Amazon:
Buy the Honeywell North 7580P100 from WC Safety or Amazon:
3M 2091 vs Honeywell North 7580P100 at a Glance
| Specification | 3M 2091 | Honeywell North 7580P100 |
|---|---|---|
| Type | Particulate filter only | Particulate filter only |
| NIOSH Class | P100 (99.97%, oil-proof) | P100 (99.97%, oil-proof) |
| Particulate Protection | Yes — 99.97% | Yes — 99.97% |
| Organic Vapor | No | No |
| Acid Gas | No | No |
| Ammonia | No | No |
| Connection System | 3M bayonet | North bayonet |
| Pack Size | Pair (2 filters) | Pair (2 filters) |
| Stacks Over Gas Cartridge? | Yes (3M 6000-series cartridges) | Yes (North gas cartridges) |
| Best For | 3M 6000/6500QL/7500 series users | North 5500/7700/5400/7600 users |
Product Profiles
3M 2091 P100 Respirator Filter
The 3M 2091 is the standard P100 particulate filter for the 3M 6000, 6500QL, and 7500 half-mask series and 3M 7800S and FF-400 full-face series. It delivers 99.97% filtration efficiency against oil and non-oil aerosols — dust, mist, fume, and metallic particulate — via the 3M bayonet twist-lock. The low-profile design clears most welding helmet chin clearances, and the filter threads directly onto any compatible 3M 6000-series gas cartridge to add particulate protection over chemical protection. Sold as a pair.
Honeywell North 7580P100 P100 Respirator Filter
The Honeywell North 7580P100 is the equivalent filter in the North respirator ecosystem — P100 rated, 99.97% efficient, oil-proof, sold as a two-pack. It uses the North bayonet connection shared by the 5500-series TPE half mask, the 7700-series silicone half mask, the 5400-series full face, and the 7600-series silicone full face. Like the 3M 2091, it can be retained directly over a North OV or multi-gas cartridge so one assembly provides both chemical and particulate protection without buying a combination cartridge.
What Each Filter Protects Against
Both filters share the same NIOSH P100 protection class and the same limitations. Neither provides any gas or vapor protection on its own. The hazard matrix is identical:
| Hazard | 3M 2091 | Honeywell North 7580P100 |
|---|---|---|
| Non-oil particulate (dust, dry fume) | Yes — 99.97% | Yes — 99.97% |
| Oil-containing aerosols (oil mist, spray) | Yes — oil-proof | Yes — oil-proof |
| Silica dust (construction, masonry) | Yes | Yes |
| Welding fumes (metal particulate) | Yes | Yes |
| Lead dust, mold spores | Yes | Yes |
| Organic vapors / solvents | No | No |
| Acid gas (hydrogen chloride, etc.) | No | No |
| Ammonia / methylamine | No | No |
If your job involves both particulate and gas/vapor hazards, see organic vapor vs P100 — when you need both and consider a combination cartridge such as the 3M 60921 (3M ecosystem) or the Honeywell North 7581P100L (North ecosystem).
Key Differences Between the 3M 2091 and Honeywell North 7580P100
1. Connection System — The Only Real Difference
The 3M 2091 uses the 3M bayonet, a quarter-turn twist-lock standard shared across 3M's 6000, 6500QL, and 7500 half-mask and full-face lines. The Honeywell North 7580P100 uses the North bayonet, a physically incompatible fitting used by the North 5500, 7700, 5400, and 7600 series. These two bayonets are not interchangeable — you cannot mount the 2091 on a North respirator or the 7580P100 on a 3M respirator. Connection system compatibility is the entire purchase decision for these two products. For a full explanation of why respirator fittings are not universal, read how to choose a respirator cartridge.
2. Respirator Ecosystem and Upgrade Path
Choosing between these two filters also locks you into an ecosystem for all future cartridge and filter purchases. The 3M ecosystem offers a deep catalog: the 3M 2097 adds nuisance OV relief to the same P100 media, and the 3M 7093 is the hard-case P100 canister. For gas/vapor combinations, the 3M 60921, 60923, and 60926 all mount on the same bayonet. The North ecosystem similarly offers the 7581P100L through 75SCP100L combination cartridges, all on the same North bayonet. Review the full 3M filter collection and North filter collection before committing.
3. Stacking Over Gas Cartridges
Both filters are designed to be retained over their respective brand's gas cartridges to create a combined particulate + chemical assembly. On the 3M side, the 2091 stacks directly over 3M 6000-series cartridges (such as the 3M 6001 or 3M 6003). On the North side, the 7580P100 stacks over North gas cartridges. This stacking capability means you can build up protection for complex environments — welding with degreaser fumes, for example — without buying a dedicated combination cartridge. If you need combination protection from the factory in a single unit, see the 3M 60921 and Honeywell North 7581P100L listed above.
4. Nuisance OV Relief Option
The 3M lineup includes the 3M 2097, which adds a layer of nuisance-level organic vapor odor relief to the same P100 filter body. Honeywell North does not publish a direct equivalent in the standalone disc format — to get OV + P100 in the North ecosystem you step up to the integrated 7581P100L cartridge. This is a minor edge for the 3M ecosystem if a nuisance-relief disc specifically is useful to your work.
5. Low-Profile Design (3M 2091)
The 3M 2091 is specifically noted for its low-profile disc geometry, which provides extra clearance under welding helmets with tight chin spacing. The Honeywell North 7580P100 is also a disc-style filter, but the 3M 2091 has a longer history of documented compatibility with auto-darkening helmet clearances. If welding helmet fit is a priority, the 3M ecosystem has a slight advantage here. See our guide on best respirator for welding fumes for helmet clearance recommendations.
Which P100 Filter Should You Buy?
Buy the 3M 2091 If…
- You own a 3M 6000, 6500QL, or 7500 series half mask
- You own a 3M 7800S or FF-400 full facepiece
- You want to stack P100 over an existing 3M 6001, 6003, or 6006 gas cartridge
- You need a low-profile P100 disc with documented welding helmet clearance
- You want nuisance OV relief alongside P100 — step up to the 3M 2097
Buy the Honeywell North 7580P100 If…
- You own a Honeywell North 5500 or 7700 series half mask
- You own a North 5400 or 7600 series full facepiece
- You want to stack P100 over an existing North N75001L OV or 75SCL multi-gas cartridge
- You want the same P100 protection at the best available price for the North platform
- Your facility standardizes on North respiratory equipment
Best Applications for P100 Particulate Filters
Silica Dust and Concrete Work
Respirable crystalline silica generated by concrete cutting, grinding, and masonry work requires NIOSH P100 protection under OSHA 1926.1153 silica standards. Both the 3M 2091 and the 7580P100 are appropriate choices — your respirator brand determines which you buy. For a deeper look at filter selection for this hazard, see best respirator for silica dust (2026).
Welding Fumes and Metal Grinding
Both filters handle welding fume particulate at the P100 level. The 3M 2091's low-profile disc design gives it documented clearance under many auto-darkening welding helmets. For jobs where both welding fumes and degreaser vapors are present, stack the filter over an OV cartridge or use a combination cartridge — see the welding fumes respirator guide for the complete selection logic.
Mold Remediation and Lead Abatement
P100 is the standard filter class for mold spore and lead dust control. Both filters qualify. The P100 oil-proof rating also covers any oil-based biocide mist used during remediation. Use with a properly fit-tested half mask or full facepiece appropriate to the exposure level.
Oil Mist and Machining Environments
Oil-containing metalworking fluids generate aerosols that require P-rated media — N-rated filters degrade in oil environments. Both the 2091 and 7580P100 are fully oil-proof (the "P" in P100), making them the correct choice for CNC machining, grinding, and any operation using cutting oil. For context on N vs P ratings, see respirator filter types explained.
Combined Particulate and Chemical Hazards
When a job involves both particulate and gas/vapor hazards — spray painting, solvent degreasing with dust, or chemical processing with fume — stack the appropriate P100 disc over the corresponding gas cartridge. On the 3M side: 3M 6001 + 3M 2091. On the North side: North N75001L + 7580P100. Alternatively, use an integrated combination cartridge to reduce the number of components. See P100 vs N95 — which do you need? for a refresher on why P100 is often the right starting point.
Respirator Compatibility
3M 2091 — Compatible 3M Respirators
| 3M Respirator | Fits 3M 2091? | Type |
|---|---|---|
| 3M 6000 Series Half Mask | Yes | Thermoplastic elastomer half mask |
| 3M 6500QL Series Half Mask | Yes | Quick-latch half mask |
| 3M 7500 Series Half Mask | Yes | Silicone half mask |
| 3M 7800S Full Facepiece | Yes | Silicone full face |
| 3M FF-400 Ultimate FX Full Facepiece | Yes | Silicone full face |
| 3M Secure Click / North / Moldex / GVS | No | Different connection systems |
Honeywell North 7580P100 — Compatible North Respirators
| North Respirator | Fits 7580P100? | Type |
|---|---|---|
| North 5500 Series Half Mask | Yes | Economy TPE half mask |
| North 7700 Series Half Mask | Yes | Silicone half mask |
| North 5400 Series Full Facepiece | Yes | Thermoplastic full face |
| North 7600 Series Full Facepiece | Yes | Silicone full face |
| 3M / Moldex / GVS / 3M Secure Click | No | Different connection systems |
Related Guides
- Respirator Filter Types Explained — N95, R95, P100 and beyond
- P100 vs N95 — Which Do You Need?
- How to Choose a Respirator Cartridge
- Respirator Cartridge Color Chart — NIOSH Color Codes Decoded
- Organic Vapor vs P100 — When You Need Both
- Honeywell North Cartridge Buyer's Guide
- 3M Filter and Cartridge Guide
- Best Respirator for Silica Dust (2026)
- Best Respirator for Welding Fumes
Frequently Asked Questions
Are the 3M 2091 and Honeywell North 7580P100 the same filter?
They are functionally equivalent — both are NIOSH P100 particulate-only filters, 99.97% efficient and oil-proof, sold as pairs. The sole difference is the connection fitting: the 3M 2091 uses the 3M bayonet and the 7580P100 uses the North bayonet. They are not interchangeable between brands. For an overview of why P100 is the top particulate class, see respirator filter types explained.
Can I use a 3M 2091 on a Honeywell North respirator?
No. The 3M bayonet and the North bayonet are physically incompatible. The 3M 2091 will not mount on any North 5500, 7700, 5400, or 7600 series respirator. If you own a North mask, you need the Honeywell North 7580P100.
Can I use a Honeywell North 7580P100 on a 3M respirator?
No. The North bayonet is incompatible with 3M respirators. If you own a 3M 6000, 6500QL, or 7500 series mask, you need the 3M 2091.
What is the difference between P100 and N95?
P100 filters 99.97% of all particulates including oil-containing aerosols — it is oil-proof. N95 filters 95% of non-oil aerosols and is not rated for oil environments. P100 is the higher standard and is required for silica, lead, asbestos, and other regulated particulates at most exposure limits. See P100 vs N95 — which do you need? for the full comparison.
Do either of these filters protect against organic vapor or solvents?
No. Both the 3M 2091 and the 7580P100 are particulate-only filters with no activated carbon or sorbent media. They provide zero protection against organic vapors, solvent fumes, acid gases, or any other airborne chemical. For jobs with both particulate and vapor hazards, use a combination cartridge: the 3M 60921 (3M platform) or North 7581P100L (North platform), or stack the filter over a gas cartridge.
Can these filters be stacked over gas cartridges?
Yes. Both are designed for this purpose. The 3M 2091 snaps over 3M 6000-series gas cartridges (OV, acid gas, multi-gas). The 7580P100 snaps over North gas cartridges (N75001L, 75SCL, etc.). This lets you build a combined particulate + chemical protection assembly without buying a dedicated combination cartridge. See organic vapor vs P100 for guidance on when stacking is the right approach.
How often should P100 filters be replaced?
P100 particulate filters have no chemical sorbent, so they do not have a chemical service life to track. Replace them when breathing resistance becomes uncomfortable (the filter is loading with particulate), when the filter is physically damaged or soiled, or per your written respiratory protection program. Unlike combination cartridges, there is no break-through concern — the filtration media simply becomes harder to breathe through as it loads. For cartridge change-out scheduling, see how to choose a respirator cartridge.
Are 3M 2091 filters safe for lead abatement?
Yes. NIOSH P100 is appropriate for lead dust at concentrations within permissible exposure limits when used with a properly fit-tested respirator. Both the 3M 2091 and the 7580P100 meet P100 requirements for lead dust. OSHA 1926.62 specifies respirator selection requirements for lead — consult your safety officer to confirm the correct protection factor for your exposure assessment.
Is the 3M 7093 the same as the 3M 2091?
Both are 3M P100 filters on the same bayonet mount, but they differ in format. The 3M 7093 is a full-cartridge-format hard case with a bayonet base, designed to mount directly on 3M 6000 series without a separate gas cartridge. The 3M 2091 is a disc filter that seats either directly on the respirator or on top of a gas cartridge. Use the 7093 when you want the cartridge-format P100; use the 2091 when you want a disc that can stack over an existing cartridge.
What is a North bayonet connection?
The North bayonet is the proprietary quarter-turn locking interface used on all Honeywell North 5000- and 7000-series respirators. It accepts North-branded filters and cartridges but is not compatible with 3M, Moldex, MSA, GVS, or other manufacturer connections. The 7580P100 is the only P100 disc-format filter available in the North bayonet system. For full ecosystem context, see the Honeywell North cartridge guide.
Which North filter is equivalent to the 7580P100 but as a single unit?
The Honeywell North 75FFP100 is the same P100 protection sold as a single filter rather than a two-pack. If you only need one filter for a specific use case, the 75FFP100 is the format to use. The 7580P100 provides better value per filter for ongoing work requiring a full pair.
Can P100 filters be used for asbestos removal?
OSHA 1926.1101 specifies half-mask respirators with P100 filters for many asbestos tasks, and powered air-purifying or supplied-air respirators at higher concentrations. Both the 3M 2091 and the 7580P100 meet the P100 requirement for applicable tasks, provided the respirator has been fit-tested and a written respiratory protection program is in place. Consult a qualified industrial hygienist for site-specific requirements.
Does the 3M 2091 fit the 3M 6500QL Quick Latch mask?
Yes. The 3M 6500QL uses the same 3M bayonet connection as the 6000 and 7500 series, so the 3M 2091 mounts and seals identically. The quick-latch feature on the 6500QL is a facepiece mechanism, not a filter connection change. All 3M bayonet filters are interchangeable across 6000, 6500QL, and 7500 series.
What is the difference between the Honeywell North 7580P100 and 7581P100L?
The 7580P100 is particulate-only (P100). The 7581P100L is a full combination cartridge that integrates organic vapor protection with P100 filtration in one housing. Use the 7580P100 when the hazard is particulate only or when you are stacking over a separate gas cartridge. Use the 7581P100L when you need OV + P100 in a single unit.
Which respirator brand has more filter variety — 3M or North?
Both brands cover the core NIOSH classes. The 3M lineup includes more specialized filter formats (nuisance-level OV relief disc, hard-case P100 cartridge, several multi-gas combination cartridges) and a broader range of combination cartridges. North covers OV, acid gas, OV+AG, ammonia/methylamine, and multi-contaminant combinations. For a side-by-side ecosystem view, see the 3M cartridge guide and the Honeywell North cartridge guide.
Can the 3M 2091 or 7580P100 be used in IDLH environments?
No. Air-purifying respirators of any class — including P100 — are prohibited in immediately dangerous to life or health (IDLH) atmospheres or oxygen-deficient environments. Supplied-air respirators (SCBA or airline) are required for IDLH conditions. P100 filters protect only against airborne particulates within established permissible exposure limits where oxygen concentration is normal.
Why Trust WC Safety
This comparison was written by Steven Eaton, editor at WC Safety Editorial, based on verified product specifications from 3M and Honeywell North and hands-on review of the filter families. WC Safety is an industrial PPE retailer and Amazon Associate focused on the construction, manufacturing, and remediation trades. We do not fabricate specs — anything not confirmed from a live product page or manufacturer documentation is marked inferred in the source. For a deeper look at how we evaluate products, see our respirator cartridge selection guide.
Reviewed by: Steven Eaton, WC Safety Editorial — June 2026