Lennox 20x21x5 MERV 11 Replacement Filter

MERV 11 Replacement for Lennox 20x21x5 (20x20.63x4.38). Actual Size 19.88x20.50x4.38". Attracts and captures pet dander, lint, dust, pollen, dust mite debris, mold spores, smoke, and smog.. Ideal for standard and residential commercial use. Designed to last 180 days. Replace regularly for optimum performance.. Free shipping on all orders!

Source reference: https://filterbuy.com/brand/lennox-air-filters/lennox-20x21x5/merv-11/