RP-5044Clamp-on designCarbon fiber composite increases aestheticsStrong and long-lastingLighter than conventional filter topsWashable and reusableThe RP-5044 Universal Air Filter is constructed from an oiled cotton filter media. It comes with a K&N embossed carbon fiber top and base for strength and durability. The carbon fiber element adds to the light-weight design and gives this filter a smooth glass like finish. The RP-5044 is a clamp-on filter that has an inside flange diameter of 3 inches and a flange length of 1 inch. The base diameter and filter length are 6 inches with a 5 inch diameter top.