Three Types Of Filter Elements Are Available For Dürr Universal’s Cartridge Filters And Filter-Silencers. Pleated Paper Elements Provide The Highest Efficiency And Are Considered Standard. Pleated Felt And Wire Mesh Elements Are Available For Less Demanding Service With Respect To Efficiency. The Three Types Of Elements Are Completely Interchangeable And Will Fit All CCS, CS, CF Or CCF Filter Housings