Lennox Healthy Climate BMAC (Boxed Media Air Cleaner) MERV 11 replacement furnace filter - X0581. Filter dimensions: 16" x 25" x 3".

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The Lennox Healthy Climate boxed media air cleaner uses a MERV 11 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.

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