Filtrete 18-in W x 30-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 Ultra Allergen Air Filter 18x30x1 | Berings
3M Filtrete 18x30x1 Micro Allergen Reduction Air Filter | eBay
Filtrete 18-in W x 30-in L x 1-in MERV 11 1085 MPR Allergen Defense Extra Electrostatic Pleated Air Filter (2-Pack) in the Air Filters department at Lowes.com
Filtrete 12x24x1 Allergen Bacteria And Virus Air Filter 1500 Mpr : Target