Air Filter High-Efficiency, 21x23.5x5 for Trane or American Standard Perfect Fit
Why wait for the HVAC rep to replace your filter? Do it yourself with our Honeywell Air Filter High-Efficiency TRN2321R1/E, 21x23.5x5 - MERV 10. It’s designed to fit Trane or American Standard Perfect Fit. This filter can capture a high percentage of airborne particles, including microscopic particles. It carries a MERV 10 rating — up to 20 times more efficient a typical five-inch pleated filter.