Air Bear 16x25x5 (4 7/8) Replacement 255649-105 MERV 10 Air Filters 1 Pack complete-systems "Excellent results throughout the growing

"Excellent results throughout the growing season

2 mV (±999

as well as two auto brightness settings

No probe changes are required when switching your measured parameter between pH

Hydro-X Plus System / HCS-3

Air Bear 16x25x5 (4 7/8) Replacement 255649-105 MERV 10 Air Filters 1 Pack complete-systems "Excellent results throughout the growingImportant 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,