YAMAMOTO Disposable Dust Mask, Head-Hanging Type, 4000-A, 20 Pieces

Catalog number: 4000-A Features: ●No metal parts. ●Nose seal prevents stuffiness and leakage. ●The length of the headband can be freely adjusted. Uses: ●Welding, polishing, grinding, crushing, and other powder handling work. Specifications: ●Length (mm): 135 ●Width (mm): 135 ●Particle collection efficiency (%): 95 or more ●Usage limit: 12 hours ●Inhalation resistance (Pa): 50 or less ●Exhaust resistance (Pa): 50 or less ●Particle collection efficiency (%): 95 or more ●Particle collection efficiency 95% or more ●National certification DS2 approved product (No. TM217) ●Head-hanging type Material/Finish: ●Non-woven fabric Caution: ●Do not use in places with harmful gases. ●Do not use in places where there is a risk of oxygen concentration being less than 18%. ●If the mask is exposed to spatter, sparks from a grinder, etc., use a welding mask or a disaster prevention mask in combination.