Amerec ASX200-RFK Scale-X Filter Replacement Kit (Dual Cartridge)Amerec ASX200 RFK Scale X Filter Replacement Kit The Amerec ASX200 RFK Filter Replacement Kit is designed to maintain peak performance of the ASX200 Dual Cartridge Scale X Water Treatment System. This kit includes two replacement Scale X cartridges that help reduce scale and mineral buildup inside steam generators. Routine cartridge replacement ensures long term steam generator protection, consistent steam output, and reduced maintenanceespecially in