Ultra-Quiet 90 CFM, 0.8 Sone Bathroom Ventilation and Exhaust FanExpertly designed for optimal performance and functionality, the BV Ultra Quiet 90 CFM, 0. 8 Sone Bathroom Ventilation and Exhaust Fan offers superior air circulation with minimal noise. With a powerful 90 CFM and low 0. 8 sone level, this fan effectively removes excess moisture and odors from your bathroom, providing a comfortable and peaceful environment. Dimension Value Housing Length (in.) 9 Housing Width (in.) 9. 25 Product Height (in.) 7. 5