Amerec Dual Cartridge Scale-X Water Filtration SystemThis system with replaceable cartridges, features a ScaleX2 filter to reduce scale build up common in boilers. The ASX200 will also reduce chlorine and sediment from water by trapping particulates in a second filter as water passes through. Must be used with auto drain to maximize benefit. What's Included Asx200 ScaleX2 System Installation and Operation Manual Features Reduces chlorine sediment Must be used with auto drain to maximize benefit