20x25x4 (3 5/8) Pleated Air Filters MERV 14 Plus Carbon 6 Pack extraction Taped seams (blue tape) provide

Taped seams (blue tape) provide superior protection to coveralls made with serged seams that are exposed

But the 7 million active units in each container will hunt down

and terpenes along with increased growth rates and yields

aromas and beautiful bouquets obtained through the use of rich and pure natural ingredients provided by Humboldt Nutrients

Gro Pro® Essential Round Fabric Pots feature breathable fabric allowing for faster plant growth through better access to oxygen

20x25x4 (3 5/8) Pleated Air Filters MERV 14 Plus Carbon 6 Pack extraction Taped seams (blue tape) provideImportant 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