Glacier Bay HDGMBS4 Ultimate Drinking Water Filtration System Under-counter water filtration system does not require mounting; simply place in the cabinet below your sink System reduces: sediment, chlorine taste and odor, cysts, lead, chemicals such as atrazine, benzene, lindane, pharmaceuticals, bacteria and viruses Auto shutoff prevents bacteria and viruses from penetrating the system Reduces chlorine by 97% and reduces lead by 99% Uses Glacier Bay Ultimate drinking water 6-month replacement filter set HDGMBF4 (included); shutting off water supply is not necessary when changing filters Battery-operated 6-month timer alerts you when it is time to change filters NSF certified under ecodyne water systems