Use the 2740 R95 Respirator with HandyStrap®and Ventex® valve in hot, dusty, humid environments where oils may be present. Applications include soldering/brazing, cement, polishing/buffing and metal machining. Dura-Mesh® shell with a Softspun® lining add comfort and durability. Certified to be 95% efficient against oil and non-oil based particulate aerosols. Available in Small and Medium/Large. Certified under NIOSH 42CFR84 Standards for R95. Sold 10 per box