4in Octagon Box W/adj Bar

With non-metallic sheathed cable clamps. Two 1/2" conduit knockouts and four cable knockouts (sides). Used to hang light fixtures between joists or structural members. Includes 4" octagon box. Not designed for ceiling fan support. 50 lb. maximum recommended support load. Furnished with 3/8"-18 NPS fixture stud. Bar hanger is adjustable from 14-1/4" to 22-1/2". Box is adjustable along entire length of bar. Acceptable for use in 2-hour fire rated walls. UL Listed. UPC bar code.