20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 15 Air Filters 1 Pack chillers-heaters-and-purification food-grade ethanol that has been

food-grade ethanol that has been specifically formulated for use in a variety of applications

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but can be used with all other methods of cloning

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Use the Oakton pH tester with accurate ATC to get instant at-a-glance readings

20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 15 Air Filters 1 Pack chillers-heaters-and-purification food-grade ethanol that has beenImportant Note: Almost ALL furnace filters have a different "actual size" than the nominal size printed on the air conditioner filter. It's best if you measure your air filter for the EXACT size and compare it to our "Actual Size" and then you can be sure your A C air filter fits! With the 4" and 5" air filters there is a wider variance between the nominal and actual size depending on the manufacturer. We also carry 4 7 8 and 5 1 4 inch depth filters,