AireTrust Nano Masks – Large Size Bulk Box – 300 Face Masks


Our bulk box offers 12 boxes ( at 25 masks per box) of our large-sized nano masks.  4C Air has collaborated with AireTrust to create a KN95 certified face masks using our patented BreSafe nanotech that has exceptional breathability and filtration.  It is a particulate mask with equivalent filtration to NIOSH N95 respirators.  Our patented nanotechnology was developed at Stanford University and allows you to breathe more free during inhaling and exhaling.  It offers filtration against microscopic particles at the PM2.5 level. Large size. 300 Masks in total.  We also offer Medium and Kids sizes.


  • KN95 Certified – GB 2626-2019 (N95 equivalent)
  • Stanford Developed Nanotech Patent
  • Up to 99% Filtration Efficiency
  • Extremely Breathable
  • Ear-Loop Style Bands
  • Adjustable Nose Collar
  • Paper Thin – Weighs only 0.3oz
  • Individually Packaged

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Instead of a mix of melt-blow materials commonly used in most hybrid masks today our particle mask uses a patented nano media material that provides amazing filtration compared to other masks.  Our nano masks average up to 99% efficiency and are GB2626-2019 certified (NIOSH N95 equivalent filtration).

In filtration and breathability tests, our AireTrust masks performed significantly better than competitive brands. Our masks only weigh 1/3 of an ounce and fit snugly against the face using ear loop straps.

Ideal for filtering out harmful airborne contaminants at the PM2.5 level.

Additional information

Weight 12 lbs
Dimensions 30 × 20 × 12.5 in


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