Upgrade your water filtration system with the Coldstream CTO MAX! This high-performing ceramic cartridge, made by a world-leading manufacturer, not only removes bacteria and cysts, but also reduces 85% of fluoride, chlorine, and heavy metals. It perfectly replaces the Doulton OBE Ultracarb or Supercarb and fits standard 10"x2.5" housings. Enjoy clean and safe water with the Coldstream CF521W.
