16x20x4 (3 5/8) Pleated MERV 7 Air Filters 6 Pack bio-organic fertilizer overflow extensions and debris screens

overflow extensions and debris screens easily slip into outlets

Double Black Diamond v2

(TS-MV will trip circuit breaker if more than one output receptacle is plugged in

BLOOM also contains lesser amounts of Magnesium and Sulfur

No waiting required — you can re-enter treated areas immediately after application

16x20x4 (3 5/8) Pleated MERV 7 Air Filters 6 Pack bio-organic fertilizer overflow extensions and debris screensImportant 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 16x20x4 filter