Advanced High Intensity Super Compact Universal Shower Filter with Replaceable 3 Stage Shower Filter Cartridge by HotelSpa AquaCare. Use with Any Shower Head, Handshower Or 3-Way Shower Combo HotelSpa 1138 Universal Shower Filter with High Performance Replaceable 3-Stage Shower Filter Cartridge, Can be used with any Overhead Shower Head, Handheld Shower or Shower Combo Replacement filter cartridge for HotelSpa Universal Shower Filter can be purchased separately. ASIN B014PTC8XS (HotelSpa Replacement Shower Filter Cartridge for Universal Shower Filter Model #1138) Contains KDF Media which is known to help eliminate up to 99% of chlorine and its vapors from shower water (depending on water temperature and flow variables) After you first shower with this double-purified water, you will notice immediate improvement in the condition of your skin, hair and nails! BEST LIFETIME WARRANTY: Hassle-Free US Limited Lifetime Warranty with LIVE customer service representatives in US.