【Upgrade】 Model 671 Fan Compatible with Nutone 671Rb, 672R, Compatible with Broa
【Upgrade】 Model 671 Fan Compatible with Nutone 671Rb, 672R, Compatible with Broan 750,751,752,N750,Compatible with 671, 671R, 671RB, 672, 672R, 672RB Unit, 3.5 Sones, 9″×9″. 503RL 763rln, 763rl, 769rl, 763rl 769rl.