3MR8514 / 8514 RESPIRATOR DISPOSABLE N95 WELDING 3M™ Particulate Respirator 8514, N95 The 8514, N95 respirator is ideal for maintenance welding applications and provides relief from nuisance level organic vapors, and ozone protection. Nuisance level refers to concentration of organic vapors that do not exceed OSHA PEI or applicable exposure limits, whichever is lower. 3M recommeded for ozone protection up to 10 times the OSHA PEI or applicable exposure limits, whichever is lower. (Not NIOSH approved for ozone). It also features adjustable straps, advanced electret media, a 3M™ Cool Flow™ Exhalation Valve and cake-resistant filter media. Made in USA. NIOSH 42CFR84 approved. Sold per box.