Selkirk Metalbestos 8T-PCPAJ 208512 Adjustable Pitched Ceiling Plate, 8 Inch, Matte Black Provides a finish appearance where the chimney passes through a sloped ceiling Only one part required to fill the full range of pitches Adjustable Black Matte finish 8-Inch x 18.5-Inch x 21-Inch to 33-Inch