The outer filter of the 2 piece interlocking system for Sundance 880 & 980 series spas 2009+ (models include Aspen, Maxxus, Optima, Cameo, Altamar, Marin, Cambria, Capri, Claremont, Kingston, Lisbon, Odessa). The outer filter is washable - clean this filter at least once a month by soaking in a solution of 16oz filter clean and 4 gal of water, then rinse very well. This filter should be replaced every 12-18 months.
Part Number: 6473-165