97003932 : Broan-Nutone 97003932 Exhaust Fan Duct Adapter & Damper 4"

Broan Nutone Exhaust Fan 4" Duct Adapter & Damper.

For use with models 576, 674, 770, 784, 162-A, 162-B, 162-C, 162-D, 164-A, 164-B, 164-C, 164-D, 164A-C, 164A-D, 50NT, 676-A, 676-B, 676-C, 676-D, 683-C, 684-A, 684-B, 684-C, 684-D, 708-B, 710-A, 710-B, 710-C, 710-D, 712-A, 712-B, 712-C, 712-D, 714-A, 714-B, 714-C, 714-D, 720-A, 720-B, 720-C, 720-D, 721-A, 721-B, 721-C, 721-D, 722-A, 722-B, 722-C, 722-D, 778WH, 80NT, HD50, HD50-B, HD50NT, HD80, HD80-B, HD80NT, HS130, HS90, MS130, MS90, S120FL, S130, S90.