【Wide Compatibility】The 50 CFM S0503B000 Bathroom Fan Motor for NuTone 763RL, 769RL B, 763RLN, 763RL B, 769RF, 763RLN B, 769RL A, 763RLNB, 763RLL, 763RLN-R01, VF705RCN, 756. Compatible with 70 CFM version of 769RL/RF series.Replacement Part Numbers: S0503B000, 0503B000, JESP-61K13, C-86677, 86677 and fan blade 99111002 【Upgraded Motor】The 763RL exhaust fan motorhas been upgraded to a pure copper motor. Compared to the pure aluminum motor used in OEM motors over a decade ago, the 763RL bathroom exhaust fan motor has better conductivity, better performance, better heat dissipation, more stable quality, and a significantly longer service life. 【Save Money and Time】 The S0503B000 replacement fan motor for the Nutone 763RL B unit requires no cutting or patching of the ceiling, nor does it require replacement of the entire housing and ductwork. Compared to purchasing a brand-new bathroom fan, this motor component not only saves you a significant amount of money but also provides a simple and quick solution to restore your bathroom fan to normal operation. 【Quiet and Comfortable】The S0503B000 motor assembly for NuTone 763RL, 763RLN and 763RLL fans moves large volumes of clean air, ensuring efficient air circulation and improving indoor air quality. It prevents water vapor from lingering on bathroom walls, mirrors, and other surfaces during showers, providing a clean and comfortable bathroom experience. Quickly removes moisture, odors, and dust in a low-noise environment. 【Easy Replacement】No professional tools or skills are required. Simply follow the easy steps to complete the replacement. The average installation time is only 10 minutes, saving you a lot of time and effort.Model 763RL Technical Specs: 110/120V, 2.0 SONES, 50CFM airflow, 60HZ frequency. Please check size and compatible models before ordering to ensure it matches your fan. 【Wide Compatibility】The 50 CFM S0503B000 Bathroom Fan Motor for NuTone 763RL, 769RL B, 763RLN, 763RL B, 769RF, 763RLN B, 769RL A, 763RLNB, 763RLL, 763RLN-R01, VF705RCN, 756. Compatible with 70 CFM version of 769RL/RF series.Replacement Part Numbers: S0503B000, 0503B000, JESP-61K13, C-86677, 86677 and fan blade 99111002