Humidifier Filter Replacement For Hu4706/hu4701/hu4702/hu4703 (hu4136),High-Quality Wood Pulp Material:Crafted from premium wood pulp paper, ensuring a safe and healthy filtration experience. Treatment:Features treatment to inhibit mold, , and growth. Versatile Compatibility:Available in two types (HU4101 and HU4136) to match for HU4901/HU4902/HU4903 and HU4706/HU4701/HU4702/HU4703 models. Efficient Filtration:90% aperture ratio ensures effective water filtration for a cleaner humidification process. Long-Lasting Performance:Designed for a lifespan of 1-2 years, providing reliable use over time. Color: White Material: Wood Pulp Paper Package Contents: 2 x Filter Replacement Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.