Filtrete 20x20x1 Air Filter, MPR 700, MERV 8, Clean Living Dust, Pollen and Pet Dander Reduction 3-Month Pleated 1-Inch Air Filters, 4 Filters - Amazon.com
Filtrete 20x20x1 Air Filter, MPR 1900, MERV 13, Healthy Living Ultimate Allergen 3-Month Pleated 1-Inch Air Filters, 6 Filters - Yahoo Shopping
Filtrete 20-in W x 20-in L x 1-in MERV 13 1900 MPR Premium Allergen, Bacteria and Virus Electrostatic Pleated Air Filter in the Air Filters department at Lowes.com
Filtrete 20x20x1 Air Filter (One only)
3M Filtrete 2200 Elite Allergen & Home Pollutants - 20x20x1
Filtrete 20x20x1 Allergen Defense Air Filter 1000 Mpr : Target