Compatible to Intelifil (IF-SM-SCIG010B) 10"X4.5" Big Blue (GAC) Carbon-Polyphosphate Scale Inhibitor-Chlorine Filter by IPW IndustriesCompatible Replacement Cartridge Intelifil IF SM SCIG010B Compatible Carbon Polyphosphate Filter Dual action GAC and polyphosphate cartridge for whole house chlorine reduction and scale inhibition in 10x4. 5 Big Blue housings 10 Micron Nominal 6,000 Gallon Capacity NSF 42 & 60 Media Coconut Shell Carbon This IPW Industries cartridge combines granular activated coconut shell carbon with clear bead polyphosphate media to address both chemical