The ASF3’s surface-to-volume ratio and a unique interior design work together to provide highly efficient filtration. The large screen surface, relative to liquid flow, reduces obstruction by preventing contaminants in the liquid stream from collecting in one area. Then the unique design of the ASF3’s interior moves liquid through the filter body in a swirling motion that helps distribute any contaminants evenly over the filter cartridge and move any solids toward the base of the bowl.