With five layers of progressively finer mesh cotton gauze media between  100% polyurethane top and base, this high flow “oiled” cylindrical inverted top  performance filter provides excellent airflow for maximum horsepower and torque.  Washable and reusable for multiple cleanings, the tall, open,  evenly spaced pleats provide excellent dust holding capacity for longer  service cycle between cleanings. Pliable polyurethane flange with  integrated bumps insures tight, no leak seal over the life of the  filter.