Chlorgon filtration system helps to remove free chlorine, dirt, and odors from water Low profile design: extends shower head approximately 1.5 inches Solid brass housing available with or without matching solid brass adjustable showerhead Extend-A-Path Baffle System maximizes the filter's contact time with water Certified to NSF/ANSI Standard No.177 Fits most 1/2-inch NPT shower heads (sold separately) Includes replaceable SLC filter cartridge (rated for 6 months or 10,000 gallons - whichever comes first)