aFe 70-70003 Air Filter HD PG7; Cone: 6F x 9.81B x 7T x 24H in 99.7% filtration efficiency provides the greatest level of protection available on the market 7-Layer oiled, washable media with 5 layers of progressively finer cotton gauze and 2 layers of synthetic material for high-performance air flow with maximum filtration efficiency, the only filtration media of its kind to be granted a U.S. patent Rounded Deep Pleats for Maximum Surface Area and Increased Flow Dimensions are 6" F, 9.81" B, 7" T, and 24" H in. Washable and Reusable for Multiple Cleaning Cycles