General description Our Universal 20 Stage Shower Filter is designed to purify hard water by effectively removing chlorine, heavy metals, fluoride, and limescale. This advanced filtration system rejuvenates skin, hair, and nails, providing a healthier shower experience. It helps alleviate skin issues such as dryness, irritation, and eczema while also maintaining the vibrancy of hair color. Technical specifications Dimensions: 2.7 x 2.4 inches Thread size: Standard 1/2 inch Filtration stages: 20 Compatibility and accessories Compatible with wall-mounted, handheld, rain shower heads, and combo shower heads Installation Easy installation with no tools required; simply hand tighten Usage Change the cartridge every 4-6 months or when water pressure decreases 4 replacement cartridges provide up to 16 months to 2 years of filtration