Upgrade 20x26x5 furnace filter Compatible with Lennox Y6604 Filter (MERV 16) and PureAir PCO3-20-16 Air Cleaner. 1-Pack

Compatible Fit: For Lennox Y6604 and PureAir PCO3-20-16 systems that use 20 x 26 x 5 MERV 16 filters, helping buyers match by model and size | Size Check: Built for compatible 20 x 26 x 5 air cleaner cabinets; verify your current filter label and cabinet fit before ordering | What Makes It Different: MERV 16 media in a ready-to-install replacement filter supports routine whole-home HVAC filter service | Easy Install: Slide out the used filter, check the airflow arrow, and place the new Y6604 replacement into the compatible cabinet | Maintenance Plan: Inspect during seasonal HVAC service and replace based on system use, dust load, indoor conditions, and service schedule