RACO Drawn Octagon Electrical Box Extender - the perfect choice for your ceiling or wall lighting fixture installations! This electrical box extender provides 15.5 additional cubic inch capacity to an existing electrical box. Measuring 4 inches by 4 inches with a depth of 1-1/2 inches, our octagon box extender provides ample space to house your electrical connections. With two 1/2 inch knockouts and two 3/4 in knockouts, wiring your fixtures has never been easier.
Two 1/2 in knockouts and two 3/4 in knockouts
Extends box capacity
Combination screw heads provide for faster installation
15.5 cu in capacity
Does not support ceiling fan
Supports up to 50 lb light fixture