1. HOUSE PREFILTER: The whole house filter is designed to prevent contaminants such as sediment, dirt, rust, calcium, and sand grains, along with other impurities, from reaching your home and family. Enjoy cleaner drinking and cooking water with this flushable and reusable filter system. 2. Protection: Safeguards your plumbing, kitchen, and bathroom fixtures from harmful particles in city or well water, which can clog taps, showerheads, and water appliances such as water heaters, washing machines, water purifiers, and other waterrelated devices. 3. 100% SAFE MATERIAL: Features a 40micron foodgrade stainless steel filter that reduces and traps particles larger than 40 microns (half the thickness of a human hair!) before they enter your home. The valve head is made of brass. The transparent screen filter shell can withstand burst pressures exceeding 725 psi (5 MPa) and offers frost protection and water impact resistance.