Compatible with for Models: Specifically designed for whole house humidifiers 400, 400A, 400M, this replacement water panel ensures and function, maintaining optimal humidity levels in your home. Enhanced Moisture Distribution: Featuring a high-output honeycomb design, this filter efficiently distributes moisture evenly throughout your home, maximizing the performance of your humidifier and enhancing indoor air quality. Superior Filtration Efficiency: Crafted to reduce pollutants in the water, this filter promotes healthier, more breathable air. Its design offers high efficiency, making it an essential part of maintaining your humidifier's performance. Easy Maintenance Routine: To your humidifier operates at efficiency, replace the for 45 filter every six months. Regular replacement helps maintain consistent humidity levels and extends the lifespan of your humidifier. Colour:White Material:Wood pulp paper Package Contents: 4 * filter 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.