Rev9Power Rev9_AF-001-RED; Universal High Performance Intake Cone W/ Adaptor From 2.25" to 4"(Red) universal fit on all intake pipe from 2.25" to 4"; overall size : 6.2" height x 6" top width X 4.75" lower width; inlet size : 2.25 , 2.5" , 2.75" , 3" , 3.25" , 3.5" , 4" brand new super high dry flow air filter ,made of high quality micro cotton gauze type filter material, filter consisted of two layers to double the filration efficiency easy removable rubber rings adaptor for different size intake pipe, designed to increase horsepower , acceleration and throttle response matt black plate and double black reinforced stainless steel mesh, -plate and mesh made out of high quality stainless steeel to keep it from rusting on cold air or high moisture locations this super high dry flow air filter is long life type filter ( not washable and reuseable)