Pool Filter Replaces Unicel 5CH-352, Filbur FC-0196 Filter Cartridge for Swimming Pool and Spa Industry's most complete line of replacement filter elements Guaranteed perfect fit - extremely durable - wash & Reuse - most energy efficient - withstands high pressures & temperatures High quality filter material Pre-Filters allow for quicker water balancing with fewer chemicals. Washing a filter will extend its life &amp; clean filters use less energy. The Jet Brush makes this quick and easy. Scum Magnets prevent scum andoil from making it to the filter for fewercleanings.