20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 10 Air Filters 2 Pack meters-&-solutions Provides optimal visibility blockage due

Provides optimal visibility blockage due to the unique knitted light deprivation design

since it does not include added plant nutrients

Dilution Range: 1:100 Fixed (1%)

Does Sluggo work after rain

20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 10 Air Filters 2 Pack meters-&-solutions Provides optimal visibility blockage dueImportant 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,