Abstract: A fluted filter cartridge is provided. The fluted filter cartridge includes filter media including an inlet flow face and an outlet flow face. The inlet flow face and the outlet flow face are generally parallel. The filter cartridge includes a frame defining a central opening. The filter media is coupled to the frame such that fluid to be filtered may be directed through the central opening to the inlet flow face of the filter media. The frame includes a top surface. The inlet flow face of the filter media is located below the top surface of the frame.

Abstract: A system for removing particulate matter from an exhaust gas includes a housing having an inlet, an outlet, and a drum region between the inlet and the outlet. A drum is rotatably mounted in the drum region of the housing and is aligned with the inlet and the outlet for intercepting the exhaust gas stream passing through the housing. The drum has a cylindrical shaped screen that allows the exhaust gas stream to pass through the drum while collecting the particulate matter present in the exhaust gas stream. As the screen rotates, a scraper removes the particulate matter collected on the screen. A spray fixture located inside the drum sprays fluid at the inner surface of the screen to removes any particulate matter remaining on the screen after the outer surface of the screen has been scraped.