Filtrete 24-in W x 24-in L x 1-in MERV 2 Basic Flat Panel Basic Flat Air Filter (2-Pack) in the Air Filters department at Lowes.com
Filtrete 24x24x1 Air Filter, MPR 1900, MERV 13, Healthy Living Ultimate Allergen 3-Month Pleated 1-Inch Air Filters, 2 Filters - Amazon.com
Filtrete 24-in W x 24-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 24x24x1, AC Furnace Air Filter Merv 12 Healthy Living Ultra Allergen 3M | eBay