Culligan AC-30 Compatible Filters, PureT USA Brand Reverse Osmosis Drinking Water System Replacement Cartridges, 3 Filter Set Culligan AC30 Compatible Reverse Osmosis Cartridge Replacement Set by KleenWater (1) dirt / sediment pre-filter (Made in America by KleenWater) compatible with 00-4015-38 (1) carbon block post filter (Made in America by KleenWater) compatible with 01-0125-80 (1) prolonged in-line carbon cartridge (Made in America by KleenWater) compatible with 01-0042-91 Not Compatible with Culligan Aqua Cleer Reverse Osmosis System