The Sands Carbon Filter range includes CTO (Carbon Taste Odour) block cartridges and GAC (Granular Activated Carbon) filters for removal of chlorine, chloramines, organic compounds, and taste and odour causing substances. Available in 10-inch and 20-inch sizes for standard filter housings, these filters are essential pre-treatment components for RO systems to protect membranes from chlorine degradation and improve water taste.