New features include an added layer to trap sediment improved activated carbon filter and an inner core which water passes over for a cleaner more refreshing taste. Removes 99.99% of cysts cryptosporidium giardia and total trihalomthanes. Filters up to 100 gallons of water. For SKU # 4194320 4201042 4201059 and 4236931. Boxed. Manufacturer number: RF-9999. Country of origin: United States. Distributed by Pur Drinking Water Sys.