Advanced Air Filter Engineering The DNA High performance air filter is a high quality, next generation multilayer cotton gauze oil impregnated air filter. The filtering media is made out of 4 layers of high quality nafta surgical cotton gauze specially designed by our R&D department. The DNA cotton is sandwiched between two layers of epoxycoated Marine grade aluminum wire mesh, designed to last a lifetime. The 4 layers of cotton and the two layers of wire mesh are pleated by state of art electronically controlled pleating machines to assure a very high quality of the final filtration media. The result of the special design and the Hi Tec manufacturing process is a filtration media that has very high flow rates, low restriction, superior dust holding capability, smoothens out the air flow stream and lasts a lifetime. The frame of the DNA filter is made out of High quality PU elastomer or Rigid PU. It is designed to fit precisely the air box eliminating air leaks and vibration. The oil that we use to impregnate the cotton is a very special grade developed by our R&D department after intense testing and produced by one of the world’s best Oil Company. This special oil is a very critical part of the filter and has the capability to produce a static charge to the cotton media and “catch” all the dust particles that flow towards the filter, even the very fine ones, down to 5 microns.