Aprilaire 401 for Model 2400 High Efficiency. Package of 2
- Genuine Aprilaire Replacement Filter Part No. 401
- For Aprilaire /Space-Gard Model 2400 High Efficiency Air Cleaner
- MERV 10 Rated
- You can Upgrade this filter system using the Aprilaire Part # 1413 Upgrade Kit
- Package of 2