Spatec 300/500/750/850: Spatec Outdoor SPA Filter 300, 300B, 500, 500B, 750B and 850B.
Spatec 700/950: Spatec Outdoor SPA Filter 700B and 950B.
Spatec 450: Spatec Outdoor SPA Filter 450B.
Remember that the filter has to be changed every 6 months or every time the SPA remains empty for more than 20 days.