Air Bear 20x25x5 (4 7/8) Replacement 259112-102 Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filters 4 Pack rock-bottom Improves food nutrient density

Improves food nutrient density

7 for optimal plant performance

or atmospheric nitrogen) that is not readily available to plants

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

Air Bear 20x25x5 (4 7/8) Replacement 259112-102 Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filters 4 Pack rock-bottom Improves food nutrient densityImportant 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,