BF-A4P Plastic Duct Adaptor Replacement Part for Bath Fans, 4-Inch Duct

The BF-A4P Plastic Duct Adaptor Replacement Part is designed for use with USI bathroom exhaust fans that connect to 4-inch ducts. Use this part to replace the worn or broken duct adaptor on your bath fan. This adaptor can be used with models BF-504, BF-504L, BF-504LF, BF-504BA, BF-704, BF-704L, BF-704LF, BF-704LH, BF-704HB, BF-704BA and BF-704L. Bathroom exhaust fans by 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 bath fan.