4 Pack) - 20 In. X 24 In. X 1 In. Premium Pleated Air Filter FPR 10 | eBay
HDX 20 in. x 24 in. x 1 in. Elite Allergen Pleated Air Filter FPR 12, MERV 13 61201.012024 - The Home Depot
K&N HVC-12024 HVAC Filter; 20 x 24 x 1
20" X 24 Steel Return Air Filter Grille - HVAC Premium
3M FPL05-2PK-24 Filtrete Basic Flat Panel MPR100 Merv-2 Air Filter 14 By 20 By 1 Inch: 14 by 20 Inch Filters (051141952116-1)
Filtrete 20 X 24 X 1 Air Filter MPR 1000 Micro Allergen Defense 4-Pack R8 | eBay
American Air Filters 220-782-051 American Air Filter StrataDensity® - 20-Inch x 24-Inch x 1-Inch - Panel Filter
20" x 24" x 1" Light Weight Galvanized Steel Washable Air Filter
Filtrete 20-in W x 24-in L x 1-in MERV 12 1500 MPR Allergen, Bacteria and Virus Electrostatic Pleated Air Filter in the Air Filters department at Lowes.com