Lennox Healthy Climate BMAC (Boxed Media Air Cleaner) Merv 10 replacement furnace filter - X0585. Filter dimensions: 20" x 20" x 5".
The Lennox Healthy Climate boxed media air cleaner uses a Merv 10 filter to capture particles down to 0.3 micron.
In most home environments, this filter only needs to be replaced every 6 months.
This is an excellent filter for someone who wants a significant upgrade over standard fiberglass filters from the hardware store.