Air Bear 20x25x5 (4 7/8) Replacement 266649-102 MERV 13 Air Filters 4 Pack spl_hlg The media's expansion is due

The media's expansion is due to the presence of two to six percent combined water in the crude perlite rock

every cycle

the MicroGuard MP® microporous

The EC/TDS portion is a two-ring probe that comes with the HI9814

and Harvest More Scissor Scrubber will help make this year’s harvest the cleanest yet

Air Bear 20x25x5 (4 7/8) Replacement 266649-102 MERV 13 Air Filters 4 Pack spl_hlg The media's expansion is dueImportant 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,