Standard
(10 PACK) SOUTHWIRE Smart Box Round Ceiling Box 50lb Support
Quicker to install than a nail on box. Easily upgraded to a MSBFAN product with bracket.Extra thick wall material for stability & rigidity.Fixture Rating: 50 lbs.UL Listed & RoHS Compliant.Box is extra deep for mounting all smoke and carbon monoxide detectors.It is also quick and easy to remove for wiring between floors, cathedral ceilings and inaccessible attics.