![Filtrete 20-in W x 20-in L x 1-in MERV 1 Basic Flat Air Filter (2-Pack) in the Air Filters department at Lowes.com Filtrete 20-in W x 20-in L x 1-in MERV 1 Basic Flat Air Filter (2-Pack) in the Air Filters department at Lowes.com](https://mobileimages.lowes.com/productimages/32c0d920-6383-4bbc-b010-d9c2e267188f/65752966.jpg)
Filtrete 20-in W x 20-in L x 1-in MERV 1 Basic Flat Air Filter (2-Pack) in the Air Filters department at Lowes.com
![HDX 20 in. x 20 in. x 1 in. Standard Pleated Furnace Air Filter FPR 5, MERV 8 (3-Pack) HDX3P5-012020 - The Home Depot HDX 20 in. x 20 in. x 1 in. Standard Pleated Furnace Air Filter FPR 5, MERV 8 (3-Pack) HDX3P5-012020 - The Home Depot](https://images.thdstatic.com/productImages/f7dac88c-2a95-4d81-bd05-c9b999043342/svn/hdx-air-filters-hdx3p5-012020-a0_600.jpg)
HDX 20 in. x 20 in. x 1 in. Standard Pleated Furnace Air Filter FPR 5, MERV 8 (3-Pack) HDX3P5-012020 - The Home Depot
![BNX TruFilter 20x20x1 Air Filter MERV 13 (6-Pack) - MADE IN USA - Electrostatic Pleated Air Conditioner BNX TruFilter 20x20x1 Air Filter MERV 13 (6-Pack) - MADE IN USA - Electrostatic Pleated Air Conditioner](https://accumed.com/media/catalog/product/cache/4e7fa6f54771e42621058bba2933bf79/b/n/bn-m13s-20x20x1-6pp-current_view.png)
BNX TruFilter 20x20x1 Air Filter MERV 13 (6-Pack) - MADE IN USA - Electrostatic Pleated Air Conditioner
![Filters Fast 20x20x1 Air Filter MERV 11, 1" AC Furnace Air Filters, Made in the USA, Actual Size: 19.75"x19.75"x0.75, 6 Pack - Amazon.com Filters Fast 20x20x1 Air Filter MERV 11, 1" AC Furnace Air Filters, Made in the USA, Actual Size: 19.75"x19.75"x0.75, 6 Pack - Amazon.com](https://m.media-amazon.com/images/I/614W-erkG7L._AC_UF894,1000_QL80_.jpg)
Filters Fast 20x20x1 Air Filter MERV 11, 1" AC Furnace Air Filters, Made in the USA, Actual Size: 19.75"x19.75"x0.75, 6 Pack - Amazon.com
![Housmile 20x20x1 Air Filter, MERV 11, MPR 1000, Unique ABS White Plastic Frame, Durable and Easy to Replace, Clean Living Basic Dust, 6 Pack (Exact Size: 19.6" x 19.6" x 0.9") - Amazon.com Housmile 20x20x1 Air Filter, MERV 11, MPR 1000, Unique ABS White Plastic Frame, Durable and Easy to Replace, Clean Living Basic Dust, 6 Pack (Exact Size: 19.6" x 19.6" x 0.9") - Amazon.com](https://m.media-amazon.com/images/I/61fD9HaJKYL._AC_UF894,1000_QL80_.jpg)