General description The Air Humidifier Filter ERN Element is designed to maintain optimal humidity levels in your environment. It is essential for ensuring the efficient operation of your humidifier. Technical specifications Color: Blue Material: Paper Package Contents: 1 x Humidification Filter Replacement Measurement allowed error: +/- 1-3 cm Usage Clean the humidified filter once a week by soaking it in edible white vinegar for half an hour, then rinse it with water three times to remove scale and prevent breeding. It is recommended to replace the filter every 3 months for optimal performance. Other information Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the actual product.