Amazon Basics Merv 11 AC Furnace Air Filter - 20 x 20 x 1 6-Pack
- AC/Furnace filter for capturing household irritants, improving air quality, and promoting furnace efficiency.
- Captures allergens between 3-10 microns including lint, dust, and pollen.
- Beverage board frame, wire mesh support, and electrostatically charged synthetic filter material.
- For optimal results change filter every 60 to 90 days.