Ewolee Dust Mask Replacement Filter, 4 Pcs Active Carbon N99 Filters for Mesh or Neoprene Mask, Bike Mask Filter for Dust Fumes Pollen Allergy PM2.5 and Running Jogging Cycling

الوصف

Specifications: Weight: 40g Size : 5.5" x 3.9"( approx) Filter material: Non woven fabric + Activated carbon cloth Features: Universal size - Compatible with majority of Dust Masks available in the market. N99 mask filter - Replaceable active carbon filters isolate up to 99-percent of dust, pollen, hazardous chemicals, fumes, heavy metal particles etc. Smooth breathing - Unique ventilation design, excellent permeability, double air breathing valve, air resistance is smaller,smooth breathing. Replacement: 1. Open the mask, revealing the internal valve filter. 2. Follow the open instructions on the valve, counterclockwise rotation of the valve, separation the air valve. 3. Take down two valves, remove the filter. 4. Change a new filter,follow the close instructions on the valve, clockwise rotating the valve and replacement is completed. Package includes: 4 x Mask Filter