Since 1969, K&N has been inventing and manufacturing creative air filtration solutions for the automotive market. Now that expertise has been brought into the home, with K&N's new washable, reusable HVAC air filter. Made from a pleated synthetic filter media, K&N lifetime washable home air filters provide excellent filtration and dust capacity for long-life performance. They are specially designed to reduce contaminants in the air you breathe—and can be cleaned easily for years of use in your home, office, or business. Instead of repeatedly purchasing new disposable filters, simply wash and reinstall your K&N filter whenever it is dirty. Save money, help the environment, and protect your family with K&N!