Replacement Carbotron Filters for the Santa Fe Advance 2 Dehumidifier. These odor reducing filters are made to replace the original filter supplied with the dehumidifier. They are made to the same measurement specs as the original but provide improved filtering capabilities by reducing unpleasant odors in basements and crawl spaces. Remember to change filters monthly for optimum performance. Will NOT fit the original Advance unit, which takes a 12 x 12 x 1 inch filter. Please see our listing for the older Advance model Odor Ban filters. Only sold as a CASE OF 12.