20x20x4 (3 5/8) Pleated Air Filters MERV 14 Plus Carbon 6 Pack cloning-and-seed-starting The product's packaging allows for

The product's packaging allows for easy pegboard-style display

UL-recognized components

from flood & drain to drip aeration to non-recovery systems

rove beetles and minute pirate bugs for thrips control

ready-to-use and easy to use

20x20x4 (3 5/8) Pleated Air Filters MERV 14 Plus Carbon 6 Pack cloning-and-seed-starting The product's packaging allows forImportant 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