DescriptionThese are swimming pool filter cartridges, made of premium material, which are safe and durable, and help prevent the hair, residue from going into the sewer. Keep your pool water crystal clear and give your swimming pool pump its best performance with the filter cartridge.Features- Color: Grey. - Material: ABS, filter paper. - Size: 11.50X11.50X8.60cm/4.52X4.52X3.38 inch. - Made of good quality materials, this filter cartridge is practical and safe to use. - For maximum efficiency, clean cartridges each week and replace them at least once a month. - Keep your pure spa jet massage water clean and fresh. - This product is suitable for most swimming pools, including private pools. - Adopts precision production to the stable characteristics and high reliability.