Air Bear 20x25x5 (4 7/8) Replacement 266649-102 MERV 14 Air Filters 2 Pack Grow Strong HIGHLY-CONCENTRATED FORMULA: With a concentration

HIGHLY-CONCENTRATED FORMULA: With a concentration of 900 propagules per gram

and cannabis

to stimulate plants and increase nutrient uptake - which will lead to faster growth

The world's first available growing system that uses natural electricity to enhance plant growth

Air Bear 20x25x5 (4 7/8) Replacement 266649-102 MERV 14 Air Filters 2 Pack Grow Strong HIGHLY-CONCENTRATED FORMULA: With a concentrationImportant 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,