16x20x4 (3 5/8) Pleated Air Filters MERV 14 Plus Carbon 2 Pack spl_hf • Unique star-shaped hole accommodates

• Unique star-shaped hole accommodates most stem sizes for cloning

a reflector design

Made with a special hi-tech glue

Disposable

does not kill

16x20x4 (3 5/8) Pleated Air Filters MERV 14 Plus Carbon 2 Pack spl_hf • Unique star-shaped hole accommodatesImportant 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 16x20x4 filter