QTDC Series 110 CFM-150 CFM Humidity Sensing Bathroom Exhaust Fan, ENERGY STARThis Broan NuTone bathroom exhaust fan from the QTDC Series offers humidity sensing technology that automatically detects and removes excess moisture, preventing mold and mildew. With a powerful airflow of 110 150 CFM, this ENERGY STAR certified fan helps reduce energy costs while improving air quality. Dimension Value Housing Length (in.) 10. 5 Housing Width (in.) 11. 375 Product Height (in.) 7. 625 Product Length (in.) 13. 125 Product Width (in.) 14