Upgrade】 763RL B Unit,769RL B Unit for Nutone 763RL/769RL A 763RLN 763RLL 763RLN-R01 Bathroom Fan 50 CFM,Fit 769RF/769RL B70 CFM, Sone,,9"x9". Compatible with Nutone Models: The 50 CFM bathroom fan motor assembly is compatible with Nutone 763RL B,763RLL,763RLN B,763RLN-R01,763RL/769RL A. Compatible with the 70CFM version of the 769RL/RF series.