Save Honeywell TRN1727R1/E 5-Inch High Efficiency Air Cleaner Filter, 27-Inch by 17.5-Inch by 5-Inch The Honeywell TRN1727R1/E High Efficiency Air Cleaner Filter for Trane or American Standard Perfect Fit. This filter features a Merv 10 Rating that is up to 20 times more efficient than typical 5 inch pleated filter. It lasts up to 6
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