【AP904 System Direct Replacement】Direct replacement for 3M Aqua-Pure AP904 whole house system. Replaces AP917HD-S
【Anti-Scale Protection Restored 】Standard AP917HD-S water filters lack scale inhibitor – our AP904 water filter cartridge includes it. The polyphosphate layer helps reduce limescale accumulation in water heaters, pipes, and dishwashers, restoring the full anti-scale functionality your AP904 system was built for
【3-Stage Filtration – Sediment, Chlorine & Odor Reduced】① 5μm pleated pre-filter reduces sand, rust, and dirt; ② Activated carbon block reduces chlorine, bad taste, and VOCs; ③ Scale inhibitor layer helps minimize mineral scale. All three stages work together for cleaner, fresher water throughout your home
【100,000 Gallon Capacity – 12-Month Lifespan】Each cartridge delivers 100,000 gallons of filtered water – a full year for an average family of 4. Steady 10 GPM flow (20 GPM peak) handles multiple fixtures at once. Operating range: 25-125 psi, 40-100°F
【Tool-Free Installation & Reliable Performance】Quick Change design – twist off the old cartridge, twist on the new one. No wrench, no mess. Precision O-ring seals help ensure a secure fit; bonded carbon block helps maintain consistent water quality
