Broan 690 Bathroom Fan Upgrade Kit, 60 CFM The BROAN bath fan upgrade kit lets you convert your old bath fan to a brand new unit in just 10 minutes. Improve performance, reduce the sound level and upgrade the appearance of your economy fan in minutes. New motor (60 CFM and 3.0 Sones) reduces sound up to 50 percent, improves air movement up to 20 percent and helps control humidity that causes mold and mildew. New Grille: Upgrade your bathroom's look with a modern white grille. Wrench: No special tools are required. The kit has everything you need including new components, a wrench, fasteners, and complete step-by-step instructions. Two motor plates included to fit most economy fans.