20x20x4 (3 5/8) Pleated MERV 14 Air Filters 6 Pack steel plant stake Charcoal-based carbon filter loaded with

Charcoal-based carbon filter loaded with 30 lbs bituminous charcoal

full spectrum mineral nutrients and vitamins that are required for cuttings to promote abundant root cell development

73” | Fits 6” Inline Fans | 800 CFM Maximum | Accepts 12 x 20 x 1” Filters

just place it on top of Big Mama

stem structure

20x20x4 (3 5/8) Pleated MERV 14 Air Filters 6 Pack steel plant stake Charcoal-based carbon filter loaded withImportant 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