The Filtrete® Ultra Allergen Reduction Filter carries a 3M Microparticle Performance Rating (MPR) of 1900 - roughly equivalent to a MERV 13 rating. This is one of the highest performing 1" filters you will find. 93% EFFECTIVE AT REMOVING LARGE AIRBORNE ALLERGENS ...
(1500 MPR) (71) (26) More 3M Filtrete Air & Water Purification Filtrete Whole House Media Filters Filtrete Air Purifiers & Replacement Filters Filtrete Water Filtration Systems “ The pool filter arrived on time price… Deborah,1 day ago ...