Air Bear 20x25x5 (4 7/8) Air Filter Replacement MERV 12 Pleated Plus Carbon 1 Pack ventilation and ducting NOTE: Tent sizes given are

NOTE: Tent sizes given are outside dimensions

conductivity (ppm) and temperature of the nutrient solution

Push-button calibration

and pollinators when used as directed

Air Bear 20x25x5 (4 7/8) Air Filter Replacement MERV 12 Pleated Plus Carbon 1 Pack ventilation and ducting NOTE: Tent sizes given 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,