3M™ Particulate Respirator 8511 features the proprietary 3M™ Cool Flow™ Valve and helps provide comfortable, reliable worker respiratory protection. It is ideally suited for hot/dusty work settings that require long periods of wear. 3M™ Particulate Respirator 851 is a lightweight, disposable N95 particulate respirator that is designed to help provide quality, reliable worker respiratory protection for certain non-oil based particles. 3M uses a variety of innovative technologies and features to help you meet your respiratory protection and comfort needs. The respirator incorporates 3M's proprietary technology with advanced electrostatically charged microfibre filter media, designed for ease of breathing. The proprietary 3M™ Cool Flow™ Exhalation Valve reduces heat build-up inside the respirator to help keep the wearer more comfortable. The soft inner material provides added comfort while the cup shape design makes the respirator spacious and durable. These features, along with the braided headbands and adjustable M-nose clip, are designed to enhance user comfort and help increase wearability. N95 Approved 3M™ Cool Flow™ Valve for cooler, drier comfort Soft inner materials Compatible with a variety of protective eyewear and hearing protection Adjustable nose clip reduces potential for eyewear fogging and helps ensure a better seal and fit Two-strap design with dual point attachment helps provide a secure fit $32.24 per box 10 per box