3M 7000002059 Particulate Respirator, product code 8246, is designed for protection against mold and silica hazards. It is maintenance-free and suitable for use in welding applications. While it does not offer enhanced comfort or feature a Cool Flow™ exhalation valve, it does have an advanced electrostatic media for efficient filtration. The respirator is R95 rated and provides nuisance odor relief for acid gas. Each box contains 20 respirators, and there are a total of 120 units per case. The shelf life is 5 years, and the respirator size is standard. It is made of carbon filter material and has a braided comfort strap for secure attachment. The NIOSH approval number for this product is TC-84A-1350.