Octagon Outlet Box Covers: Application - General Ceiling Outlet; Shape - Octagon; Material - Steel; Box Diameter in inch - 4; Box Depth - in - 1-1/2; Capacity - cu-in - 15.0; Knockouts/Sides-Bottom - None - (1)1/2"; Clamps - AC/NM Cable; Mounting Hardware - Bracket, Wrap Metal Stud; Additional Information - Metal Stud Size: 2-1/2"-3-5/8"
Additional Info: Metal Stud Size: 2-1/2"-3-5/8"