honeywell trn1427t1 trane perfect fit replacement filter 14" x 27" x 5", merv 10 this high efficiency replacement filter fits the trane perfect fit media air cleaners. it replaces bayftfr14m. filter measures 14" x 27" x 5" since 1885 honeywell has been providing customers with cutting-edge technology in the home comfort industry. from the first thermostat to today's innovative indoor air quality products, honeywell continues to be a leader in the home comfort market.