The Clean & Clear Plus filter combines top-end filter performance with low maintenance. This dependable design uses special filter elements to strip tiny particles from your pool water…particles as small as 20 microns (an average grain of beach sand is 1,000 microns). Our four-cartridge design provides maximum filter surface area to capture more dirt and extends timebetween cleanings. And cleaning is a snap. Open the top, remove the cartridges, hose them off and the Clean & Clear Plus filter is ready to go again.