1. Multifunctional compatibility: Compatible with Aprilaire 413/3410 Space-Gard 2400 air purifier filters 2. Product specifications: Provides a long-lasting and durable user experience 3. Performance specifications: Effectively improves indoor air quality and helps maintain a healthy environment 4. Application scenarios: Suitable for air conditioning systems in homes, offices and any environment that requires clean air, which can enhance air circulation performance 5. Filter life: To maintain the best filtration effect, it is recommended to replace the filter every 3 to 6 months 6. Consequences of not replacing: Failure to replace the filter in time will significantly reduce its filtration performance, affect the overall efficiency of the device, and cause secondary pollution Colour:As Shown Material:HEPA Package Contents: 1 * Air purifier 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.