Although the item has been opened, it is unused. I planned to use it at my new home, but I ended up not using it and storing it away. At home, I have been using a Zenken water purifier for many years, and I think it's a very good product. I will also include the shower hose adapter. Zenken Bath Shower Water Purifier (for bathtubs) NEW Aqua Century Rainbow CCF-151S Brand: Zenken - Model Name: CCF-151S - Filter Performance: 150,000 liters - Size: 142mm x 165mm x 27mm - Weight: 1.7kg - Brand Name: Zenken Thank you for looking.