Compatible models: CFK-VWX05C, CFK-VW50B, CFK-VW500A CFK-VW50G, CFK-VX50F, CFK-VX50E *Please check the compatible model before placing your order. Compatible model numbers CFK-F04VX, CFK-F06VW Estimated replacement (1 piece): About 1 year, replacement time may vary depending on usage time and installation location. This is a consumable item.If the dirt seems to be noticeable and less effective, we recommend replacing it immediately.