Van Air Mist Eliminator Filter Housing is a special purpose coalescing filter to handle large amounts of oil with minimal pressure drop in the air line. Like the housing, the coalescing filter element used with our Mist Eliminator is built to last. Designed to handle large amounts of oil within the air stream, the filter element is constructed of a thick bed of glass fibers that facilitates self-cleaning and continuous draining. On average, the filter element only needs to be replaced every ten years and carries a ten year prorated warranty.