Feature: 1. Perfect Fit: Replacement wick filter is compatible with PHILIPS HU4801 HU4802 HU4803 HU4811 HU4813 air humidifier. 2. Super water absorption: The filter has super water absorption, which can prevent the humidifier from being damaged due to excessive humidity. 3. Reduce Pollution: This filter can filter the tiny dust produced when using the humidifier, reducing secondary air pollution. 4. Stable performance: The filter with stable and reliable performance can improve and maintain the best performance of the humidifier. 5. Easy installation: The filter is easy to install and replace, and the damaged or old filter can be replaced directly. It can be used directly after installation. Specification: Item Type: Humidifier Wick Filter Material: High Efficiency Particulate Air Weight: Approx. 52g/1.83oz Application: For PHILIPS HU4801 HU4802 HU4803 HU4811 HU4813 Package List: 1 x Humidifier Wick Filter