Compatible to Intelifil (IF-SM-KDF850102) 9.75"x2.75" 20,000 Gal. 2 lb. KDF-85-GAC Carbon - Iron & Hydrogen Sulfide Removal - Filter Cartridge by IPW IndustriesIPW Industries Compatible to Watts Intelifil IF SM KDF850102 9. 75"x2. 75" KDF 85 GAC Iron & Hydrogen Sulfide Filter Cartridge Dual media specialty filter combining KDF 85 and coconut shell carbon for iron, sulfur, and taste removal in whole house or RO systems 20,000 Gallon Capacity 2 lb KDF 85 Media 10 Micron Nominal Standard 10"x2. 5" Housing This KDF 85 GAC cartridge addresses iron and hydrogen sulfide problems that standard carbon filters cannot