The 6 Month Direct System Under Sink Replacement Filter Set by Express Water includes 4 filters, each measuring 10 inches in height. These filters are designed specifically for Express Water models and are essential for maintaining clean and refreshing water in your kitchen. Additionally, the product carries a California Prop 65 Warning, emphasizing the importance of being aware of potential health risks associated with the chemicals used in the filters. This set provides a convenient solution for keeping your water pure and safe for consumption.