20 x 20 x 1 MERV 11 1085 MPR Allergen Defense Extra Electrostatic pleated Air Filter 2 -Pack Filtrete Micro Allergen Filter 3M Filtrete 20x20x1 Air Filter, Healthy Livg Maximum Allergen, MERV 13 Mpr 1900 20x20x1 Filtrete Micro Allergen Air Filter Merv 11 By 3m 2 COUNTLESS MICROPARTICLES: With a 1200 MPR and MERV 11 rating, your Filtrete Filter will help capture many microparticles and large particles from the air passing through it The Micro Allergen goes to work every time your heating and cooling system kicks on. Filtrete 20 In. x 20 In. x 1 In. 300 MPR Basic Dust & Lint Furnace Filter, MERV 5 - Stone's Home Centers It's like having an expensive whole house air purifier, only cheaper!, Ships fast!, Rated MERV 11 , 20x20x1 in size
