Broan-NuTone 1671F Finish Pack. Motor Assembly and Grille. 70 CFM, 6.0 Sones Since their beginning in 1932, Broan has pioneered many of the product innovations now established as standards of the industry. Today, Broan carries on the commitment to p rovide the finest products in the industry. Broan-NuTone 1671F Finish Pack. Motor Assembly and Grille. 70 CFM, 6.0 Sones Features: • Finish Pack. Motor Assembly and Grille. 70 CFM, 6.0 Sones