Query: 20x20 charcoal filter
Filterbuy 20x20x1 Air Filter MERV 8 (Allergen Odor Eliminator), Pleated HVAC AC Furnace Filters with Activated Carbon (4-Pack, Black)
Filtrete 20x20x1, AC Furnace Air Filter, MPR 300, Clean Living Basic Dust, 6-Pack (exact dimensions 19.69 x 19.69 x 0.81)
No Toil Castle, One-Year HVAC Furnace Filter, 20” x 20” x 1” - Black - 20201
Filterbuy 20x20x1 Air Filter MERV 8 (Allergen Odor Eliminator), Pleated HVAC AC Furnace Filters with Activated Carbon (6-Pack, Black)
Filterbuy 20x20x1 Air Filter MERV 8 (Allergen Odor Eliminator), Pleated HVAC AC Furnace Filters with Activated Carbon (2-Pack, Black)
Flanders PrecisionAire 84857.012020 20 by 20 by 1 NaturalAire with Baking Soda, 4-Pack