3M Aqua-Pure Under Sink Full Flow Water Filter System AP Easy Cyst-FF is one of several options in a complete product portfolio delivering cleaner, clearer drinking water. This under sink filtration system is NSF listed to reduce particulate, chlorine taste and odor and parasitic protozoan cysts. The system connects to the primary kitchen or bath water faucet and comes ready for installation.See our streamlined portfolio of 3M Aqua-Pure and 3M products available differentiated by their reduction claims.All of our featured under sink water filtration systems on the following page are NSF tested and certified unless noted on the reduction claims.Use the existing primary faucet to enjoy a high flow rate.For strongest water flow, use the 3MFF100.One year replacement interval for 3MFF100.