1. Long service life of the filter element: The filter element adopts a unique chemical fiber structure (PAT.PEND) with a rough surface and becomes finer toward the inside. Significantly reduce clogging, greatly improve the life of the filter element, no need to worry about rust, standard 5Um filter element. 2. Long-life filter element used to filter harmful dust and impurities contained in the air. 3. Precision (0.3μm) filter element "Y" option 4. Special filter element that effectively separates tar and carbon. (Nonrenewable) 5.F.R.L combination: The main dimensions are unified, the options and product types are rich, and the system configuration is easy to deal with. Category: Air Filter, Brand: CKD, Series: F4000