Directions of Filter Elements Model: PF-D/L-R D-Outside Diameter L-Length R-Filtration Rating Advantages of stainless steel pleated filter elements High dirt holding capacity High reliable standard specifications Stainless steel pleated filter element has low pressure drop due to high porosity Pleated filter element has accurate filtration rating Easily cleanable by conventional chemical cleaning and with a long life-span Filtration area of pleated stainless steel filter element is increased by pleating