Pentek - ChlorPlus 20 - 20" x 2.5" Chloramine Carbon Block FilterPentek Specialty Filtration ChlorPlus 20 20" x 2. 5" Chloramine Carbon Block Filter Engineered carbon briquette technology for superior chloramine and chlorine reduction in municipal water applications 1 Micron 20" x 2. 5" Carbon Block WHY IT WORKS Carbon briquette construction for chloramine removal Chloramine Reduction Engineered specifically to reduce chloramines, a disinfectant compound used by many municipal water systems that standard carbon