21x21x4.5 MERV 11 Rheem RXFH-E21AM10, RXFH-E21AM13 Replacement Filter

MERV 11 Replacement for Rheem 21x21x4.5 (20.75x20.75x4.38) RXFH-E21AM10, RXFH-E21AM13. Actual Size 20.75x20.75x4.38". 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/rheem-air-filters/rheem-rxfh-e21am10-rxfh-e21am13/merv-11/