Dual-element filter cartridge for air intake filters designed for a dusty environment

摘要: A dual-element disposable filter cartridge for air intake filters of machines operating in a dusty environment, the having second pleated element arranged concentrically inside first element, filtering paper comparison to fractional effective surface area, lesser density and heavier gauge with wider longer flow passages or pores which, due higher speed therethrough, trap dust particles new state cartridge, pass through outer element.