K&N washable reusable Industrial Air Filters help provide a solution to more efficient and sustainable industrial cooling operations. Founded in 1969, K&N is the inventor of the washable reusable automotive replacement air filter. In an ongoing effort for increased sustainability, K&N has applied the technology of washable reusable automotive air filters, to an entire category of industrial air filters in various sizes and MERV ratings, to lower energy cost of industrial, commercial, and residential facilities, and eliminate 15 years of landfill waste with disposable product.