3M Filtrete 2800 MPR Ultrafine Particle Reduction Filters 16x20x1 2-Pack

3M Filtrete 2800 MPR Ultrafine Particle Reduction Filters 16x20x1 2-PACK MERV -14 Rating 2800 MPR (microparticle performance rating) Removes 97% of dust particles 7 times better compared to non-electrostatic pleated filters Captures particles down from .3 to .1 micron