Photo 1 of CAL20 Ti, 20x25x5 MERV 16 Energy-Efficient Furnace Filter Compatible with Lennox X6675, Ultra Low Pressure Drop Filter Replaces Lennox X6673, EXPXXFIL0020(1 Pack)

Double tap image to zoom

Photo 1 of CAL20 Ti, 20x25x5 MERV 16 Energy-Efficient Furnace Filter Compatible with Lennox X6675, Ultra Low Pressure Drop Filter Replaces Lennox X6673, EXPXXFIL0020(1 Pack) Photo 2 of CAL20 Ti, 20x25x5 MERV 16 Energy-Efficient Furnace Filter Compatible with Lennox X6675, Ultra Low Pressure Drop Filter Replaces Lennox X6673, EXPXXFIL0020(1 Pack) Photo 3 of CAL20 Ti, 20x25x5 MERV 16 Energy-Efficient Furnace Filter Compatible with Lennox X6675, Ultra Low Pressure Drop Filter Replaces Lennox X6673, EXPXXFIL0020(1 Pack)