3M N95 Respirator Filter, 5N11, Disposable, Helps Protect Against Non-Oil Based Particulates, Use With 3M 5000 Series Respirators or 6000 Series Gas and Vapor Cartridges, 10 Pack

Work good for filtering air. I use them when I wear a mask. They're pricey but good quality. I don't feel swafe when just wearing a flimsy masks.

These 3M N95 filters provide great protection against dust, allergens, and non-oil-based particulates. I use them with my 3M half-face respirator, and they fit securely without restricting airflow too much. They’re great for painting, woodworking, and general shop use, and I’ve noticed a significant reduction in airborne particles while working. Given their long-lasting filtration capability, these are a must-have for anyone who needs respiratory protection on a regular basis.

Got for my son’s automotive class. Works as they should.

Absolutely perfect!!

This is suppose to be the prefilter for your cartridge, is a way to keep the dirt, dust and any debris from getting in contact with the big cartridge filter.One would hope a better packaging because they were just tossed into a box without individual bags for each one, this should be fixed so the prefilters would reach the costumer totally clean and in better condition.But overall is a good product and a must have in order to properly operate the masks.

did a great job protecting my respiratory system while doing some remodeling.

Came on fast.

Dies what it was made to do!