Set of 2 filter cartridges for Fjord, Kili, Camaro, Mono, Aurora and Tekapo inflatable spas All our spas are sold with a cartridge filtration pump. Essential for clean water, the filter cartridge is easy to install and maintain. It helps keep the spa dirt free. The filter cartridge can be cleaned several times taken up with a water jet. But when it remains dirty or tinted, it's time to change it. Damaged or clogged cartridges must be replaced immediately to avoid damaging the filtration pump. To ensure quality and longevity, our filters are not made of paper but of polypropylene. In order to minimize the impact on the environment, our filters have been redesigned to limit waste. Detailed features: Dimensions: 10.6cm x 6.7cm 90-ply polypropylene filter Easy to change More efficient, thanks to its ingenious structure Pack of 2 filters