10mm*175mm Long-Lasting Air Humidifier Filter Replacement Sponge for Home and Office Aroma Diffusers - Refreshing and Moisturizi

Dear friends, (It is recommended to replace the filter once a month)

Allow selection of a length error of approximately 3mm

Before installation, both ends of the filter must be completely wet. 2. After installation, check if the spring compression is about half? (If the filter is short, the spring will not compress)

We can customize any size of filters, if you have customize requirements, free feel to contact with customer service!