1.Description : Toilet Seat Filter Element (3pcs) For Smartmi Toilet Seat Upgrade Version Spiral Filter Element 5μm Filtration High Quality PP Cotton Health Care Filter Element 2.Features : - 3PCS Available For 18 Months: Change the filter element every 6 months on average. - 5μm Filtration: High quality PP filter cotton, can filter impurities above 5μm. - Spiral Filter Element: Suitable for Smartmi smart toilet seat spiral filter model. - Easy Installation: Comes with a special wrench. 3.Parameters: Item name: Toilet Seat Filter Element (3pcs) Model: MTGLX02ZM Applicable for: Smartmi Toilet Seat Upgrade Version Number: 3pcs Size: 333392 mm Weight: 200 g 4.Note: *There is a little of difference according to manual measurement. 5.Package List: 1 * Toilet Seat Filter Element (3pcs) 1 * Wrench 1 * User Manual