· HIGH-QUALITY FAN: Centrifugal fan with a 1. 5 Sones rating at 70 CFM and a 4" round duct connector· MODERN: Trim matched to designs of major recessed light manufacturers· PRACTICAL: 6. 87" high housing fits in new construction and 2" x 8" ceiling joists to allow for easy installation where you need it most· EFFICIENT: Uses a 75-Watt bulb, either R30 or BR30 for standard applications. Multiple units can easily be used in larger rooms· EASY TO USE: Includes optional wall controls for easy, simplified use. Fan not for use over cooking surfaces· If you are purchasing in Massachusetts we recommend Broan-NuTone 744LED per state requirements.