Hello there - The filters that were used in that model have been updated by the company that made them "Pleatco" - you will now need the X268532 ( Eco Pur Mineral Filter) and the X268546 (PMA - R1) the standpipe that the original filters may have used to go down the center of the old filters will screw out and this filter (the two parts lock together to form one) will screw into place. You can gather pricing to purchase filters from any local dealer or you can source it from dealer websites like www.masterspaparts.com. If you have any further questions or this does not sound like what you have reach out to 1-800-860-7727 or email support@masterspas.com