Replacement filter for Philips 3000 series humidifiers (HU3916/10 and HU3918/10) Used for hygienic humidification with low bacterial emissions. Filters bacteria and debris from the water before they are released into the air. 30mm thick water-absorbing core, efficient water absorption and evaporation Size: 190*135*30mm 9,350cm² expanded The wick surface enables efficient water absorption and evaporation. Note: The data is all measured manually. Please allow 1-3cm error due to light and display differences. Color differences may occur. Please refer to the actual item you received.