Compact limescale filter with a transparent inspection window, a long-lasting sealing ring, and a standard 12-inch pure copper thread for broad household compatibility. Key benefits Easy visual maintenance: The transparent window lets you quickly see the pollution status of the filter element so you know exactly when to clean or replace it. This saves time and avoids unexpected performance drops. Reliable, leak-free operation: A unique sealing ring is engineered to withstand high water pressure and minimize the risk of leaks, giving consistent, trouble-free use. Broad compatibility and durable connection: The standard 12-inch thread interface is made from pure copper for corrosion resistance and a solid fit. It works with most shower heads, taps, washing machine inlets, and water heater outlets. Protects appliances and water flow: By filtering limescale and larger particulates, this unit helps maintain appliance efficiency, reduces scale buildup, and supports steady water performance. Features Transparent window for on-site filter inspection Unique sealing ring designed for high-pressure durability Standard 12-inch pure copper threaded interface Fits common household water outlets (shower heads, taps, washing machines, water heaters) Typical use scenarios Shower: Install between the water supply and shower head to monitor and reduce limescale buildup that can restrict flow and damage fixtures. Washing machine inlet: Attach to the machine’s water inlet to help protect valves and extend the appliance’s service life by limiting scale and sediment entry. Water heater or tap connection: Fit at the heater outlet or tap to reduce mineral deposits on heating elements and aerators, preserving heating efficiency and water delivery. Installation and maintenance Screws onto standard 12-inch threaded fittings (use appropriate washers if required). Inspect the filter element through the transparent window and clean or replace the element when visible buildup appears. The pure copper thread and durable sealing ring minimize the need for frequent re-sealing or replacement. What it solves Prevents visible and hidden limescale buildup Reduces maintenance time by enabling visual checks Minimizes leaks under high pressure thanks to the reinforced sealing ring Provides a widely compatible connection with durable copper threading Material and size specifications Thread interface: standard 12-inch Thread material: pure copper Seal: unique long-lasting sealing ring Visual inspection: transparent window for filter status This filter combines clear visual monitoring, pressure-resistant sealing, and a durable copper thread to offer a practical, reliable solution for reducing limescale and protecting household water fixtures and appliances.