aFe MagnumFLOW Air Filters 3in F x 5-1/2in B x 5-1/4in T (Inverted) x 8in H - PairThis filter features three layers of oil free synthetic media and requires no oil during maintenance to provide maximum convenience. Its progressive layering provides great filtration efficiency and dust holding capacity, while its inverted top makes for more filter surface area, resulting in longer service intervals. The air filter is wrapped in reinforced metal providing maximum strength to prevent filter collapse. This media is best suited for