1/2/4Pcs Replacement Reusable Filter Cartridges For Mspa Inflatable Swimming Pool Jacuzzi [Mspa massage bathtub filter element] Dimensions: As shown. Suitable for Spa brand MSPA models, suitable for Aurora, Mont Blanc, Mono, Alpine, Camaro, Nest, Soho, Baikal, Starry, Bliss and Silver Cloud's Delight, Premium, Elite, Concept [Mspa spa accessories] Effectively remove dirt from swimming pools and hot tubs, keep water clean and change less water. [Impurity removal]: The massage pool filter is made of resin that is easy to clean and durable. Dirt is easily washed away. MSpa filter element can prevent secondary pollution. [Easy to clean]: Simply remove the filter from the pump, then rinse off the dirt with a garden hose. Be careful not to rough clean or use a high pressure water gun as this may damage the filter paper. [Easy to Replace] Replace a new filter element every two weeks for best results. Material: Resin Package Included: 1/2/4Pcs Replacement Filter Cartridges(as your choice)