Replacement Carbotron filters for the SaniDry CSB 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.