Fits standard 1/2 in shower fitting threads. Easy to install with included Teflon tape and a wrench. Chrome finish with ash gray shower face. 5 spray settings: full body spray, soft rain spray, invigorating pulse, full body spray/rain combo, and full body spray/pulse combo. Provides level 2 extra filtration through reduction of chlorine sulfur odors and scale. Bacteriostatic filter limits the passage or growth of bacteria that may already exist in the incoming water. Cartridge life: 6 months or 10,000 Gal NSF tested and certified. Culligan replacement cartridge model: WHR-140 (SKU #7544281).