4 Inch Octagon Ceiling Box with Bar Hanger, Metallic. 2-1/2 Inch Deep. Side Knockouts: (4) 1/2 Inch, Bottom Knockouts: (2) 1/2 Inch, Adjustable Length from 16 to 24 Inch, Rated For 70 lbs Fan Weight. 150 lbs Fixture Weight, 25 Cubic Inches
- Knockout Diameter: 1/2 in
- Mounting: Bracket
- Mounting: Screw On
- Depth: 2 1/2 in
- Mounting: Nail On
- Cubic Inches: 25 in³