Amazon.com - WuYan 2pcs Black Replacement Filters for Philips HU4102 Humidifier Wick Replacement Filters,Compatible with HU4801 HU4802 HU4803 Humidifier Parts
HQRP 2 Pack Wick Filters Compatible with Philips HU4801, HU4801/01, HU4802, HU4802/01, HU4803 Humidifiers, HU4102 White - Walmart.com
Replacement Wick Filter for Philips HU4102/20 Humidifier
1/2pcs Replacement for HU4801 HU4802 HU4803 HU4811 HU4813 Filter HU4102 Wood Pulp Paper Air Humidifier Absorbent Filter - Walmart.com
HU4102 Humidifier Filters,Filter Bacteria And Scale For Philips HU4801/HU4802/HU4803 Humidifier Parts - AliExpress