BNX TruFilter 20x20x1 MERV 13 (4 Pack) AC Furnace Air Filter MADE IN USA
Actual Size: 19 11/16’’ x 19 11/16’’ x 3/4‘’. Comparable with MPR & FPR 10. Based on ASHRAE Standard 52.2-2017 Initial Efficiency / Resistance. Noticeably cleaner air in 48 hours.