Engineered for Pure Performance: This premium 3-pack set includes one Sediment Filter (5 micron) and two Activated Carbon Block Filters (5 micron), purpose-built for VIVA21’s 5-stage RO system. Effectively reduces sediment, chlorine, taste, odor, and other impurities — ensuring the longevity of your RO membrane and the crisp taste of every drop. 12-Month Lifetime Guarantee: We stand behind our quality. Each VIVA21 pre-filter set is guaranteed to deliver optimal performance for 12 months under normal usage — or we’ll replace it, no questions asked. Universal Fit, Seamless Compatibility: Designed to fit all standard 10” under-sink reverse osmosis systems, including most 3-stage pre-filter housings. Precision-molded for high-flow reliability and leak-resistant operation. Sustainable and Cost-Saving: A smarter alternative to bottled water. Enjoy clean, great-tasting water while reducing plastic waste - and your monthly expenses. Certified Quality, Trusted Support: Built to meet WQA quality standards and backed by VIVA21’s lifetime customer support - so you’re never left without answers or help. The VIVA21 cartridges feature an advanced filtration design that helps maintain consistent water flow while removing unwanted particles, maximizing the life of the RO membrane. These professional-grade filters are engineered to integrate seamlessly with compatible reverse osmosis systems, providing your household with cleaner water for drinking and cooking. This high quality pre-filter set maintains reliable filtration throughout the cartridge's service life. For optimal performance, follow the manufacturer's recommended replacement schedule. These replacement cartridges help maintain your reverse osmosis system's effectiveness in delivering better-tasting water straight from your tap.