Air Bear 20x25x5 (4 7/8) Air Filter Replacement MERV 8 Pleated Plus Carbon 1 Pack hydro-x It is still a direct

It is still a direct drive fan

Graphite Sensor for Reduced Polarization Effect

Soax® wetting agent helps to achieve consistency in growing media by aiding in the even dispersing of water and nutrients throughout the entire root zone

or grow rooms as needed

Air Bear 20x25x5 (4 7/8) Air Filter Replacement MERV 8 Pleated Plus Carbon 1 Pack hydro-x It is still a directImportant 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,