16x20x4 (3 5/8) Pleated Air Filters MERV 15 Plus Carbon 1 Pack Grow Strong especially during home improvements

especially during home improvements

they have a cotton lining

vigorous growth rates are maintained along with the production of essential oils and the aroma value of flower buds and fruits

NemaSeek Hb (Heterorhabditis bacteriophora) Beneficial Nematodes seek out stationary pests

it also offers a propagation area for growing

16x20x4 (3 5/8) Pleated Air Filters MERV 15 Plus Carbon 1 Pack Grow Strong especially during home improvementsImportant 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