The Doulton Duo is a versatile two-stage under-sink filtration system designed for Doulton OEM ceramic filters. Its simple, reliable design provides clean and fresh water for your home, office, or RV by treating a wide range of water conditions.

• Versatile installation for kitchen under-sink, water coolers, or water fountains
• Simple, easy-to-install design that is easy to maintain and wholly reliable
• Operates without power, ensuring continuous water filtration during outages
• Compatible with long-life, cleanable Doulton OEM ceramic filters for added value
• Genuine OEM product designed for high-performance water treatment