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When a plant goes into a fruiting cycle
" — Devon R
Nordic Pure MERV 10 Pleated AC Furnace Air Filters provide exceptional filtration for both home and commercial environments
Hardwood handle
Recommended usage is 3 pounds per acre
16x20x4 (3 5/8) Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filters 2 Pack meters-&-solutions When a plant goes intoImportant 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. If you are replacing a 4 3 8 depth 16x20x4 filter