DUST MASK RESPIRATORS
Dust Mask Respirators come in many configurations and ratings. The primary ratings are N, P and R. Following the letter rating is a number, generally 95,99 or 100 which relates to how much the filter has been measured to remove of particulate matter of 0.3 microns in diameter or greater. You can learn more about Dust Mask Ratings by clicking the prior link. Breathing Masks and respiratory protection can also be had by using PAPR systemsthat make breathing easier, and much more comfortable.