With non-metallic sheathed cable clamps. Two 1/2 in conduit knockouts and four cable knockouts (sides). Used to hang light fixtures between joists or structural members. Includes 4 in octagon box. Not designed for ceiling fan support. 10 lb maximum recommended support load. Furnished with 3/8 in - 18 NPS trade size fixture stud. Bar hanger is adjustable from 14-1/4 to 22-1/2 in. Box is adjustable along entire length of bar. Acceptable for use in 2 hrs fire rated walls. UL listed. UPC bar code. 1-1/2 in deep and 15.5 cu-in capacity.