20x25x5 (4 3/8) Lennox X6673_X6675 Replacement Air Filters MERV 15 Plus Carbon 2 Pack nutrients-and-supplements ppm 700 and ppm 500

ppm 700 and ppm 500 scales

large amounts of potassium are quickly used by the plant

Well balanced between water holding capacity and drainage

The Neutralizer is composed of a mixture of such oils

HI70004G is a high quality pH 4

20x25x5 (4 3/8) Lennox X6673_X6675 Replacement Air Filters MERV 15 Plus Carbon 2 Pack nutrients-and-supplements ppm 700 and ppm 500Important 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,