MERV 11 Replacement for Ruud 21x21x4.5 (20.75x20.75x4.38) RXFH-E21AM10, RXFH-E21AM13
- MERV 11 Replacement for Ruud 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!