RACO ceiling outlet box, extension ring, 4 knockouts, (4) 1/2 in knockout, 3-1/2 in diameter, 1-1/2 in depth, octagon shape, 11.8 cu-in capacity, steel, UL listed. 3-1/2-inch. Octagon extension metallic. 1-1/2″ deep side knockouts: (4) 1/2″ cubic inches: 11.8″. manufacturer part #: 111.
- 3-1/2-inch. Octagon extension
- Metallic. 1-1/2″ deep
- Side knockouts: (4) 1/2″
- Cubic inches: 11.8″