American Standard 21x21.5x5 MERV 8 Aftermarket Replacement Filter
- American Standard 21x21.5x5 MERV 8 Aftermarket Replacement Filter
- Actual Size 20.1x21.1x5"
- Traps and blocks over 90% of pollen, dust mites, mold, larger dust particles, and more.
- Ideal for standard and residential commercial use
- Designed to last 180 days. Replace regularly for optimum performance.
- Free shipping on all orders!