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Organic materials and inorganic minerals are the most common impurities found in distilled and tap water
NEW IMPROVED MODEL - MORE DURABILITY AND STRENGTH
grasses and vegetables
Replace if soiled or spores are present on the filter after harvest
20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 13 Air Filters 4 Pack Lamps Organic materials and inorganic mineralsImportant 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,
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