20x25x4 (3 5/8) Pleated Air Filters MERV 14 Plus Carbon 2 Pack soil nutruient Pyrethrin and Permethrin free

Pyrethrin and Permethrin free

Nordic Pure 12x30x1 MERV 13 Plus Carbon air filters are made of electrostatically charged synthetic materials with an added flat panel infused with activated charcoal that attracts and capture most airborne particulates in your home

Do NOT store diluted or after nutrients have been mixed with water

At the heart of both these systems is the new and improved PHB4030 Phantom Commercial DE Ballast with USB Interface

Another advantage to the systemic action of this product is that you can use it without fear of harming bees

20x25x4 (3 5/8) Pleated Air Filters MERV 14 Plus Carbon 2 Pack soil nutruient Pyrethrin and Permethrin freeImportant 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 20x25x4 filter