View 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)

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View 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)View 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)View 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)