Check the listing for details. Sundance Spas Filter Inner Filter (6473-164). Condition: New. Listed at 42.99 USD. Sundance Spas Inner Filter6473-164OEM Part Sundance Spas INNER 6473-164 MICROCLEAN ULTRA FILTEROD5-11/16"Length18-3/4"FOR SUNDANCE® SPAS MODELS:Altamar, 2009+Aspen, 2012+Cameo, 2009+Capri, 2009+Majesta, 2009+Marin, 2009+Maxxus, 2009+Optima, 2009+Can be used on the Spas that used the Microclean II filter on 2005-2008 850/880 Systems.This filter can only be used with the Micro Clean Ultra Outer Core Filter. This filter fits all 2005+ 850/880 Series Spas.Please note: Do not use any sort of cleaning products on this type of filter. It is designed to be disposable and should be replaced every 4-6 months.Returns are not accepted on opened or used product. Please make sure that this filter fits your Sundance Spa. An RMA/RGA is required to return all products. Buyer pays return shipping.If you have any questions, please let us know. We would be happy to help.