Honeywell HRF-R1 True Hepa Replacement Filter, Type R Clearance Helix is 31 degree which

Helix is 31 degree which minimizes the over aggressiveness of a true parabolic flute

Longer creases for improved traction

Thickness 5/8"

Includes one 'AA' Battery

With guides to secure with screws for added stability

Honeywell HRF-R1 True Hepa Replacement Filter, Type R Clearance Helix is 31 degree whichFully capable of capturing an astonishing 99. 97% of airborne particles at 0. 3 microns from any air passing through the filter. This package includes 1 HRF R1 Filter and is compatible with the HPA090 series, HPA100 series, HPA200 series, and HPA300 series. It is highly recommended that you change your filter annually for optimal performance. Establish an unrivaled breathing experience for you and your loved ones with Honeywell and their second to