16x20x4 (3 5/8) Pleated MERV 14 Air Filters 1 Pack Electrical Components - Displays both CO2 concentration

- Displays both CO2 concentration and temperature

The name says it all

Blowers contain a PWM-controlled motor used to minimize noise during speed variations and are suspended in mid-air with silicone mounts to absorb vibrations

Super quiet operation

Biodegradable PERpose Plus works on contact and provides cost effective

16x20x4 (3 5/8) Pleated MERV 14 Air Filters 1 Pack Electrical Components - Displays both CO2 concentrationImportant 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