Description: This humidifier filter is designed to prevent growth and migration of mold, fungus, algae, and bacteria. Anti-static, waterproof, Acid resistance, Low temperature resistance & Alkali resistance. Applicable Models: HU4801 / HU4802 / HU4803. Installation: The filter can be installed directly at the product alignment. Features: Made of high quality wood pulp paper. Advanced humidification filter, bacteria and scale can be adsorbed. Traps mineral deposits found in water. Designed to inhibit the growth of bacteria, mold and mildew. Specifications: Condition: New Material: Wood pulp paper Product Model: HU4102 Use: Water filtration Packing: Opp Life: 1-2 years Color: White Applicable Models: HU4801 / HU4802 / HU4803 Open Area: 90% Size: Approx. 20 * 13.5cm / 7.87 * 5.31in Weight: Approx. 58g Package Includes: 1 x humidifier filter Note: 1. Please allow 1-2cm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. 3. Please select it according to your Air Purifier Model