Do it Best 20 In. x 20 In. x 1 In. Dust & Lint MERV 6 Furnace Filter

Do it Best MERV 6 efficiency rated HVAC (Heating Ventilation and Air Conditioning) air filters are 5 times more effective than standard fiberglass filters. Protects furnace and central air equipment from household dust and lint. Effective for up to 60 days. Gray label.