Carbotron Replacement Filters for the original Santa Fe Advance 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. Dimensions 11.75 x 11.75 x .75 inches. Will NOT fit the Advance2 unit. These are only available as a case of 12 or 24.