Your lungs will thank you for your investment. These filters will trap any particulate matter that is 10 microns in diameter or larger. That's one tenth the diameter of a human hair. Avoid asthma attacks and allergies with a long-lasting MERV 11 filters from Honeywell. Unusual make or model of the furnace? Not a problem. Get your filters custom cut to fit at Filter Factory Outlet Store.
In a low impact environment such as homes without children or pets these filters can last 9 months. In other cases, we recommend a change every 6 months.