Compatible to Intelifil (IF-SM-DI020B) 20"x4.5" 25,000 mg-L Mixed Bed DI Lowers TDS Levels Filter by IPW Industries IncWatts Compatible Mixed Bed DI Filter Intelifil IF SM DI020B Compatible 20"x4. 5" Deionization Cartridge Reduce TDS to near zero with refillable mixed bed resin technology for ultra pure water applications 25,000 mg L Capacity 10 Micron Nominal Refillable Cartridge 3 GPM Flow Rate This mixed bed deionization cartridge removes nearly all electrically charged contaminants from water by combining cation and anion exchange resins in a single refillable