Bath and Ventilation Fan Roof Cap; Type Roof Cap; Used On 3 or 4 Inch Round Duct, Range Hood/Bath Ventilation Fan/Losone Fan; Size 11 Inch Length x 9-1/4 Inch Width x 4-3/8 Inch Height; Material 24 Gauge CRCQ Steel; Finish Black Electrically Bonded Epoxy