The USI Electric BF-50MA Motor Assembly Replacement Part is designed for use with all 50 CFM bathroom exhaust fans. Use this part to replace the worn or broken motor assembly on your bath fan. Bathroom exhaust fans by USI Electric combine high function with practical design to keep air moving and effectively pull out moisture. Return your bathroom to a normal humidity level and prevent mold, mildew and odors from taking over your living space with a USI Electric bath fan. The USI Electric BF-50MA Motor Assembly Replacement Part comes with a 3 year limited warranty that protects against defects in materials and workmanship.