The GKtwo carbon filter from Uniformation can absorb up to 80% of the unpleasant odors released when printing with resin. Instead of these odors, fresh air will be distributed, so that you no longer have odor nuisance. A filter lasts about 2 months, but it is advisable to replace it every month so that you are always assured of optimal operation. The exterior is made of ABS, has two magnets on the side and is easy to mount on the 3D printer. This air purifier is 11.5 x 12.3 x 8.5 cm and is specially designed for the Uniformation GKtwo 10.3 inch resin 3D printer. This pack comes with 6 filters.