3M 7000002028 Particulate Respirator is designed to protect against hazards such as mold and silica. It is maintenance-free and offers enhanced comfort with its Cool Flow™ Exhalation Valve and adjustable buckle strap attachment. The respirator has a NIOSH Filter Approval Rating of N100, providing excellent particle filtration. It is suitable for standard-sized faces and has a shelf life of 5 years. Each case contains 20 units. The respirator is not flame-resistant, fluid-resistant, or a registered medical device. It does not provide nuisance odor relief or protect against acid gas or organic vapor.