Pkg of 2 -AquaCera W9511304 Ceragrav Cerasyl Plus 10 inch Gravity Filter Element - Doulton SuperSterasyl Replacement by AquaCera - Fits LP5 Plastic Filter Body<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Recommended flow rate - .3 to .7 gpm</li><li>Recommended cleaning frequency - 6 months or when flow rate is noticeably lower</li><li>Recommended change frequency - every 12 months</li><li>Removes Cholera， Typhoid， Salmonella， Serratia， Fecal Coliform &gt;99.99%， Cryptosporidium Parvum， Giardia Lamblia - 100% removal</li><li>Removes Pesticides， herbicides， organic solvents， Iron， Aluminum， Hydrogen Sulphide， Iron， etc.</li></ul></div><img src="http://ecx.images-amazon.com/images/I/21AtPKGNnRL.jpg" noproxy>