✨ Elevate Your Wash Game with Spot-Free Perfection! Perfect for cars, RVs, boats, and even windows! Achieve a showroom finish without the hassle! Reduce water spots while being kind to the planet. Advanced DI media for superior mineral removal. Effortless setup with included garden hose adapter. Deionized water tech 20 washes per filter Made in the USA The WaterSentinel DI SF-20W is a high-quality deionized water filter designed for effortless, spot-free rinsing of vehicles, RVs, boats, and home windows. Made in the USA, it features advanced filtration technology that removes minerals and dissolved ions, ensuring a glossy finish. With a compact design and included garden hose adapter, it offers up to 20 final rinses, making it a must-have for any car care enthusiast.