Features:* 2 pcs. Humidifier Filter Replacement for O-031 Oskar O-030* * Made of eco-friendly materials, * air filter, can replace humidifier filter, return to clean air* Healthier lifestyle: filters prevent the release of limestone, bacteria and fungi from the air * Safe and clean filter for humidifier* Maintaining clean antibacterial treatment helps prevent mold growth and migration, fungi and bacteria on the filter, removing minerals and impurities from the water. Replacement filter is an ideal substitute for natural cool humidifiers. Greatly helps remove minerals and impurities* Easy to install, so you can restore cleanliness as soon as possible. Simply remove the old filter and put this new filter in its place* To keep the room in a fresh environment, it is recommended to replace the filter every 3 to 6 monthsSpecifications:* Replace OEM Number: For Oscar O-030/O-031* Fit model:For Oscar Little stadler, for Oscar BigFor Oscar Little O-101, O-102, O-103, O-104For Oscar O-020, O-021, O-022. For Oscar Big O-025, O-026A* Size: 17.3CM*22CM*3.5CM (Approx.) * Color: As pictures show Warm Tips: Please check the model, design and size before you buy. Package Contents:2*FiltersNote:1.The actual colors of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2.Please allow slight manual measurement deviation for the data.