Keep your tub piping hot with this 12-Pack of Lay-Z-Spa Hot Tub Filter Cartridges. Suitable for all Lay-Z-Spa models High quality cartridges filter out unwanted dirt and grime to keep your water safer Helps to optimise pump performance by protecting it from dirt that could cause damage You can relax in your your tub knowing that your water is safe and clean. Can be easily cleaned and reused thanks to their material blend Each filter measures 10 x 10 x 17.2 cm Made from plastic Save 60% and clean up your act with this 12-Pack of Lay-Z-Spa Hot Tub Filter Cartridges