3M Half Face Reusable Respirator HF803SD Product Overview Product Details 1. Speaking Diaphragm Designed to help provide easier communication while working 2. Push Button Seal Check Easy way to conduct required seal check prior to each use 3. Easy Breathing Dual-flow cartridge design allows for air to be pulled through both sides of the cartridge for easy breathing 4. NIOSH-approved for use with 3M Secure Click style cartridges and filters 5. Unique Filter & Cartridge Connection Snaps into place for intuitive assembly 6. Easy-Adjust Buckle Simple two-way adjustability: pull straps to tighten, squeeze wings to loosen. 7. Exhalation Valve Helps direct exhaled breath and moisture downward 8. Silicone Flex-Joint Faceseal Provides a softer feel for more comfort on the wearer-s face 9. Swept Back Filter & Cartridge Design For compatibility with certain welding and grinding shields*
