20x25x4 (3 5/8) Pleated Air Filters MERV 14 Plus Carbon 2 Pack DUCTWORK This blade is the ideal

This blade is the ideal finishing touch for the elite trimmer and ensures each grow operation can maximize its yield and quality

Next light

and switch the unit on

RootShield Plus is also available in a granular formulation

20x25x4 (3 5/8) Pleated Air Filters MERV 14 Plus Carbon 2 Pack DUCTWORK This blade is the idealImportant 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