This is the replacement Acid-free activated carbon for the VOXEL Bento Box, Bento Mini, and the VentoBox P2S Filter. The total surface area is 1100+ m^2/g ensuring effective VOC absorption. 1lbs of Carbon is good for 10 refills.

It is recommended to change the carbon every 2-3 months. HEPA 13 replacement is available as well.