3M 2091 P100 Particulate Filters, 3 Pairs — NIOSH P100, Low Breathing Resistance

3M 2091 P100 particulate filters are high-efficiency bayonet-style cartridges that filter at least 99.97% of airborne particles for use with compatible 3M half and full face respirators.

These P100 filters are designed to reduce inhalation exposure to a wide range of solid and liquid particulates encountered in industries such as welding, construction, agriculture, pharmaceuticals and metalworking. Built with 3M Advanced Electret Media, the cartridges balance filtration performance with low breathing resistance and are flame- and water-resistant for demanding work environments. Each box includes three pairs, simplifying replacement schedules and keeping spare filters on hand for crews and individuals.

How do these filters perform in heavy particulate environments?

The 2091 achieves P100-level efficiency, removing 99.97% of particles down to the most challenging sizes when used with properly fitted respirators. Performance depends on correct fit and respirator type—half facepieces protect up to 10× PEL, and properly fit-tested full facepieces extend protection to higher multiples.

• NIOSH P100 certified for high filtration efficiency
• Works with both oil and non-oil particulates
• Best results when paired with compatible 3M bayonet respirators

Will these filters make breathing difficult during long shifts?

3M’s Advanced Electret Media is engineered to lower airflow resistance so users can breathe easier over extended wear. The cartridge design keeps the unit compact and lightweight, reducing fatigue compared with bulkier filter options.

• Low breathing resistance for extended comfort
• Lightweight construction reduces face load
• Compact shape minimizes interference with head and eye protection

Which tasks and contaminants are these filters suitable for?

2091 P100 filters are commonly selected for processes that create airborne metal, dust, and fumes such as welding, brazing, soldering and metal pouring. They also protect against other hazardous particulates like lead, asbestos, cadmium and some pharmaceutical dusts when used as part of a complete respirator program.

• Frequent use in welding, cutting and metal fabrication
• Effective for lead, asbestos, cadmium and similar particulates
• Useful across construction, manufacturing and agricultural settings

How do I attach and maintain these 3M bayonet filters?

The filters mount quickly to compatible 3M bayonet-style half and full facepieces—twist and lock into the respirator’s filter ports. Inspect before each use, store in a dry place, and replace when breathing becomes difficult, the filter is damaged, or service life per your safety program is reached.

• Bayonet connection for quick installation and secure fit
• Replace when breathing resistance increases or filter is compromised
• Store away from heat, moisture and chemical contamination

Who is this for: Professionals and supervisors who need reliable, high-efficiency particulate protection across multiple job sites and tasks. Ideal for welders, metalworkers, construction crews, agricultural workers and lab personnel who require P100-level filtration and compatibility with 3M bayonet respirators. Use these filters as part of an overall respiratory protection program that includes fit testing, training and regular inspection. Note: This product may contain substances listed by some jurisdictions as hazardous; follow local regulations and your employer’s safety policies.