N95 masks and KN95 masks are both types of respirator masks that are designed to filter out airborne particles. However, there are some key differences between the two that are important to know.

The N95 mask is the standard respirator mask used in North America, while the KN95 mask is the standard respirator mask used in China. The main difference between the two is the level of filtration they provide. N95 masks are tested and certified by the National Institute for Occupational Safety and Health (NIOSH) and are designed to filter out at least 95% of airborne particles.  PPE Online's most popular N95 mask is 1870+. KN95 masks, on the other hand, are tested and certified by the Chinese government and are designed to filter out at least 95% of airborne particles as well.

Another difference between N95 masks and KN95 masks is the fit. N95 masks are designed to have a tight seal around the face, while KN95 masks are designed to have a more relaxed fit. This is because N95 masks are made to fit tightly around the face to prevent air leaks, while KN95 masks are made to fit more loosely around the face to allow for easier breathing.

In conclusion, N95 masks and KN95 masks are both types of respirator masks that are designed to filter out airborne particles. The main difference between the two is the level of filtration they provide and the fit. While N95 masks are considered medical-grade and recommended for use by healthcare workers, KN95 masks can also be used to protect against airborne particles and can be effective in preventing the spread of respiratory infections.