Pentair Clean and Clear® RP CCRP 100 100 SqFt Cartridge Filter 150 gpm. The Clean & Clear RP Cartridge Filter has a side-entry port, which provides nearly 50% more efficiency than any other single-cartridge filter available. Inside, the Clean & Clear RP filter has increased cartridge surface consistency to block and trap particles as small as 20 microns. The result is picture-perfect pool water and lower energy use.