Glacier Bay HDG2VS4 Advanced Household Water Filtration System Whole home water filtration system for cleaner, clearer water throughout your home. Includes valve-in-head bypass that eliminates the need to turn off your household water. Includes HDX household filter HDX2BF4 (melt blown, 5 micron sediment filter) Uses HDX household filters: HDX2CF4, HDX2BF4 (included), HDX2SF4, HDX2PF4 or any major brands of household filters Includes mounting bracket and wrench with this systems purchase Questions? Contact our customer support center at 1-800-247-1087