This motor and Blower Wheel is a Replacement for Nutone Bathroom Exhaust Fans.  Printed on the Metal Bracket is :   Nutone Model 8663RP "B" Unit 

Replacement for VL-3668P and 8673RP B Unit.

Specifications on Sticker:

• 115/120V  
• 60HZ  
• 1.9 Amps 
• 100 CFM 
• 3.5 Sones
• Type IC-Inherently Protected
• For Use with Model 8663RP "A" Housing Only. 

Motor Specifications:  

• Single Speed  
• CCW Rotation viewing the blower wheel  
• 120 Volt 
• 1550 RPM's 
• 1.2 Amps 
• 2 Prong Plug 
• Thermally Protected 

Other Specifications:

• Blower Wheel Included 5-5/8" Diameter x 2" Height
• The mounting bracket  measures 9"x 9" 
• Has stud on mounting bracket for cover to screw onto. 

Designed to fit models: 8663RF, 8663RFT, 8663RLG, 8663RMAB, 8663RMBR, 8663RMSA, 8663RP, 8673RP, VL3668RLG,  VL3668RMAB, VL3668RMBR, VL3668RMSA, VL3668RP