This kit includes six 5 micron filter elements, one charcoal filter element, and two bags of SC-1 storage chemical. This kit is compatible with the Ventura 150, Ventura 150 Ocean Rowing, Cape Horn Extreme 330, Catalina 340 Z, and older units such as the Spectra 180C, 200C, 380C, and Catalina 300 MKII.