1 set of replacement filters with following : 25 x Yarn Wound Water Filters Material: String Wound Polypropylene Thread Core Material: Polypropylene Maximum Pressure 90PSI Operation Temperature: 40°F to 175°F 5-Micron Nominal Rating Dimensions Approximately. 10 inch x 2.5 inch Filter Life: It’s highly Recommended this filter to be changed every 6 months to 8 Month MAX. Total 25 filters, each individually wrapped.