Maximum Filtration & Water Pressure (2.5 GPM Flow Rate) – Constructed with a unique up flow design which maintains water pressure, prevents clogging, and increases contact time with media. Premium Carbon Filtration - Filter your shower water with coconut shell carbon and copper-zinc media that is independently tested to NSF/ANSI Standard 177 to reduce more than 90% of chlorine. Healthier Skin, Hair & Air - Reduced harmful chemicals means more moisturized skin, healthy shiny hair, and less chlorine in your shower steam Long Lasting & Cost Efficient Filtration - Our filters are some of the longest lasting on the market. Keep your water fresh for 6 months or 10, 000 Gallons and for as little as 25 cents a day Simple DIY Installation & Filter Replacement - Easily install showerhead in 4 simple steps. Compatible with standard ½” shower arms. After installation run water for several minutes to flush carbon fines until water is clear. For optimal filtration, remove and replace filters every 6 months., Weight: 2.3 pounds, Manufacturer: Aquasana