Every Genuine AprilAire Air Filter is manufactured and sold with our Pure Fit Promise, which guarantees that our filters will fit flawlessly into your Aprilaire Whole-Home Air Purifier and deliver purer healthier air. Click here to learn more about the AprilAire Pure Fit Promise
- Protects your HVAC system and offers superior filtration performance to 1” filters
- 20”x20” nominal size
- Unpainted steel cabinet
- Comes with 310 Clean Air Filter, which has more than 9 times the filtration area found in 1" filters
- Guaranteed with our Pure Fit Promise: Self Seal™ technology, interlocking rails, and Clean Coil Commitment
- Easy to maintain — simply change the Air Purifier’s filter once up to every 12 months
- Versatile installation — compatible with systems located in basements, attics, closets, and more
- Compatible with the 313 Healthy Home Filter