Air Bear 20x25x5 (4 7/8) Air Filter Replacement MERV 10 Pleated Plus Carbon 4 Pack ventilation Supreme Air Carbon Filters are

Supreme Air Carbon Filters are the result of years of research and testing to dial-in the most efficient carbon grade and filter design with use in real world situations

Expandable: Add optional side walls and shelves to make one tall 6-shelf unit

Can be mixed with copper-based fungicides without affecting performance

BioThrive Bloom benefits all kinds of plants during flowering and fruiting phases of growth

depending on the type of plants you are growing and the quantity of plants in your system

Air Bear 20x25x5 (4 7/8) Air Filter Replacement MERV 10 Pleated Plus Carbon 4 Pack ventilation Supreme Air Carbon Filters areImportant 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,