20x25x4 (3 5/8) Furnace Air Filters MERV 12 Pleated Plus Carbon 6 Pack fans-ventilation-ducting Displayed on an easy-to-read and

Displayed on an easy-to-read and construct

Illustrated instructions

the sturdy sealing arm is mounted on a thick

every three weeks

Bypass pruner design holds stems in place while the curved blade slices through for a clean cut

20x25x4 (3 5/8) Furnace Air Filters MERV 12 Pleated Plus Carbon 6 Pack fans-ventilation-ducting Displayed on an easy-to-read andImportant 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. If you are replacing a 4 3 8 depth 20x25x4 filter