The DRB ESCF Final Filter is ideal for applications requiring supported media, and fit in the Camfil / Farr HP Holding Basket. They are also a cost-effective because the media is interchangeable. Each ESCF filter element has tapered pleats to maximize the media area and assure low airflow resistance. The ESCF is made of non-woven polypropylene fibers with high tensile strength. The filter elements are collapsible, making for easy transportation.