Air Bear 20x25x5 (4 7/8) Air Filter Replacement MERV 14 Plus Carbon 2 Pack control system the stability of your grow

the stability of your grow environment

and the elimination of raw edges that may generate unwanted particulates

Our high efficiency activated carbon AC filter helps eliminate smoke particles

Two 1/2" elbows

This gives you a buffer on the watering times but still allows you to feed regularly without over watering

Air Bear 20x25x5 (4 7/8) Air Filter Replacement MERV 14 Plus Carbon 2 Pack control system the stability of your growImportant 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. We also carry 4 3 8 and 5 1 4 inch depth filters,