Keep your spa water clean and Intex PureSpa performing at its best by using genuine Intex PureSpa Type S1 Pool Filter Cartridges.  Replace your filter cartridges regularly for the best results. It is recommended that you replace cartridges every 2 weeks

• Pack of 12 x genuine Intex Type S1 filter cartridges
• The S1 Cartridge Filter is sure to keep your PureSpa Jet Massage water clean and fresh
• Made with easy-to-clean, heavy-duty Dacron paper for the ultimate filtration
• For maximum efficiency, clean cartridges each week and replace every 2 weeks