Allied Moulded SB-CB Sliderbox Round Outlet Ceiling Box-CEILING SLIDER BOX

Ceiling slider box. 4" diameter nonmetallic, adjustable ceiling box with internal steel stud, wood screws, and molded-in Speed Klamps . (2) 1/2" knockouts. Tested to hold 50 lb. 2-3/4" D. x 4" W. Type: Sliderbox, Construction Type: Old, Diameter: 4", Depth: 2-3/4", Cubic Capacity: 26 cu in, Material: Plastic, Fixture Support Rating: 50 lb, Shape: Round, UL Listed?: Yes