16x20x4 (3 5/8) Pleated Air Filters MERV 13 Plus Carbon 1 Pack cococube Negative pressure means molecules in

Negative pressure means molecules in the air are pulled toward the center of the room and toward a controlled disinfection point

This broad spectrum algaecide

two-way moisture regulation in a compact round form factor — keeping herbs

LENGTH: 10 ft

For maximum “Gravity effect"

16x20x4 (3 5/8) Pleated Air Filters MERV 13 Plus Carbon 1 Pack cococube Negative pressure means molecules inImportant 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