880 Series Aspen, Maxxus, Optima, Cameo, Altamar, Cambria, Marin & Capri. Approximate life span for the filters (6473-165s, 6540-488s and the outer filter for 6541-297s) is a year to a year and a half. The inner core (6473-164s) should be replaced every 3-4 month. You should rinse the filter biweekly, weekly for heavy usage. Using cleaners like Filter Nu, Spray and Rinse and the Tablet cleaner are great ways to extend the life and keep your water clean and clear. Note, the inner core can not be rinsed or washed.

880 Series 2023 and older – Inner – 6473-164s, Outer – 6473-165s, Both – 6541-297s, Complete set, no Core needed – 6540-488s.

880 Series 2024 and newer – Inner 6473-453s, Outer – 6473-452s, Both – 6541-964s Complete set, no Core needed – 6541-965s.