This hot tub filter from FilterLogic is compatible with the Lay-Z-Spa VI Filter Cartridge to fit any Lay-Z-Spa pump including Inflatable Miami, Vegas, Palm Springs and Monaco. These filters offer an economical and energy efficient alternative filter for your hot tub / spa. Well maintained filtration in hot tubs is essential to ensure suspended dirt and debris doesn’t cause damage to the integral pump and heating system. The filter can also help prevent the build up of sludge in the pipework that could lead to microbiological contamination. Each filter also removes impurities such as precipitated iron, calcium, body oils, lotions and dirt. Each filter lasts approximately 6 months but it is recommended that you rotate filters every two weeks. Dimenstions: 10.4cm x 8cm This pack contains 12 filters.