Nominal Filter Size: 20x20x5 Actual Filter Size: 20' x 19-3/4' x 4-3/8'
The Lennox Healthy Climate boxed media air cleaner has Merv 10 filtration that captures particles as low as 0.3 micron. In most home environments, this filter will only need to be replaced every 6 months. This is the perfect filter for someone who wants a significant upgrade over standard fiberglass filters from the hardware store.
