Definitions for "High-efficiency particulate air filter"
a replaceable extended media, dry-type filter in a rigid frame and having a minimum particle-collection efficiency of 99.97% on all particles larger than 0.3 micrometer.
Type of air filter that removes 99.97% of particles 0.3 um or larger at a specified flow rate of air.
a filter which removes particles in the air by forcing it through screens containing microscopic pores.