Broan InVent Series 80 CFM 1.5 Sone Ceiling Mounted HVI Certified Bath Fan with LED Light. Model: AE0BL. CFM: 80. Duct Size: 4" round. Housing Height: 5.75". Housing Length: 9.25". Housing Width: 10". Max Ventilation Area: 75 sq ft. Product Weight: 10 lbs. 80 CFM blower, specifically designed for continuous use application. Compact housing mounts directly to inboard joists, making retrofit or new installation applications straight-forward and simple. Includes an 11W LED light. Specifically designed to remove excess moisture and odors while circulating air.