20x20x4 (3 5/8) Pleated MERV 15 Air Filters 6 Pack Sea Green Hydro "Roots Organics Extreme Serene is

"Roots Organics Extreme Serene is a natural source of growth-promoting nutrients and botanical extracts

the Beauvaria bassiana

and compact design

The bags are combined to collect and separate both the leafy trim and keif

20x20x4 (3 5/8) Pleated MERV 15 Air Filters 6 Pack Sea Green Hydro "Roots Organics Extreme Serene isImportant 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 20x20x4 filter