Air Bear 20x25x5 (4 7/8) Replacement 259112-102 Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filters 4 Pack rock-bottom Use to improve soil structure

Use to improve soil structure and increase nutrient uptake during all phases of plant growth

*The Barrel Gasket is made of Nitrile and can degrade with overexposure to chemicals like Isopropyl Alcohol

Improves food nutrient density

Perfect solution for shipping applications

7 for optimal plant performance

Air Bear 20x25x5 (4 7/8) Replacement 259112-102 Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filters 4 Pack rock-bottom Use to improve soil structureImportant 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,