1.[Multi-Stage Filtration] - Specifically designed as a hard water shower filter, the 15-stage filtration system reduces the presence of heavy metals, chlorine, and fluoride. Delays skin aging by removing water toxins and helps boost the immune system by preventing chlorine-induced skin damage and enhancing the skin's vitamin supply. Dramatically improves the appearance of hair and nails by maintaining skin pH balance and cellular . 2.[Long-lasting] - For filtration results, each filter cartridge should be replaced every 4 months or after 3,500 gallons. Our hard water filter for shower head cartridge has a Flow rate of 2.0 GPM. The water filter for shower replacement operates at a temperature of 40-120F, and pressure of 20-125 psi. 3.[Cost-Effective] - This shower head filter for hard water, is the market's most affordable quality replacement and cost-effective solution for your shower needs. 4.[Easy Install] - Our water filter for shower replacement is an easy task to accomplish and requires no tools.