Furnace Filters

K&N 20x20x1 HVAC Furnace Air Filter, Lasts a Lifetime, Washable, Merv 11, the Last HVAC Filter You Will Ever Buy, Breathe Safely at Home or in the Office, HVC-12020

The LAST AIR FILTER YOU WILL EVER BUY: Washable furnace filter for long-term home HVAC filter savings SAVE MONEY: Save $30 annually with reusable air filter compared to disposable, one time use filters INCREASE HVAC EFFICIENCY: Excellent airflow to help maintain HVAC system efficiency