Whole House Water Filter System: 3-stage filtration system with sediment, GAC (Granular Activated Carbon), and CTO (Compressed Activated Carbon) filters to effectively remove chlorine, odors, VOCs, and other chemicals, greatly improving water quality and taste Professional Filter System: 1st stage: polypropylene sediment filter removes rust, sand, and large particles. 2nd stage: GAC filter absorbs chlorine, VOCs, odors, and some heavy metals. 3rd stage: CTO activated carbon filter further purifies small impurities and chlorine Easy Installation and Maintenance: The filter system features a painted iron frame for both floor-standing and wall-mounted installation. A pressure gauge lets you monitor water pressure and replace filters when needed to ensure optimal performance Large Capacity & Long-Lasting: This whole home water filter system filters up to 100,000 gallons of water and lasts 6-12 months, reducing maintenance. With a 1" NPT connection and 15 GPM flow rate, it ensures a smooth and efficient water supply Universal Cartridges: All filter cartridges are 4.5" x 20", compatible with most whole house filtration systems. The included round wrench makes filter replacement easy for effortless maintenance