* Culligan ® is the registered trademark of "Culligan International" of Northbrook, IL, the manufacturer of Culligan AquaCleer Good Water Machine ® brand water treatment equipment. The replacement water filters and membranes listed above are not manufactured or endorsed by Culligan International. Rather, these water filters and reverse osmosis RO membranes are manufactured by other companies. While these water filters and reverse osmosis membranes are compatible for use in Culligan Aqua Cleer ® Good Water Machine brand water filtration equipment, we make no representation as to whether using these replacement water filters and reverse osmosis membranes is consistent with the warranty applicable to Culligan ® brand water filter equipment.