Update your old Broan or NuTone bath fan with the C380BN replacement 80 CFM, 2.5 Sones motor and enjoy fog-free mirrors and cleaner air. The C380BN is compatible with 50 CFM, 70 CFM, 80 CFM, and 100 CFM fans with a metal housing size of 8" x 8-1/4". It delivers up to 60% more power (50 CFM and 70 CFM fans only) and reduces sound up to 35% (4.0 Sones and 3.5 Sones fans only). Installation is easy and can be completed in 10 minutes or less with only a flat head screwdriver. Simply pop out the old motor with the screwdriver, insert the new motor, then plug it in. The C380BN is only compatible with Broan or NuTone fans that have a housing measuring 8" x 8-1/4" x 5-3/4". Measure your fan housing and reference the list of compatible fan models. Does not fit other brands. Fan cover not included. This motor assembly contains Genuine Broan-NuTone replacement parts, guaranteed to fit. All parts are designed, tested, and certified to ensure your product runs at peak performance.