Air Bear 20x25x5 (4 7/8) Air Filter Replacement MERV 13 Plus Carbon 2 Pack timers-and-instruments With a dual flange design

With a dual flange design

pH- Bloom is one of our pH regulators

You must use the TMHDT104

With hanging hook

Air Bear 20x25x5 (4 7/8) Air Filter Replacement MERV 13 Plus Carbon 2 Pack timers-and-instruments With a dual flange designImportant 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,