Four cable clamps and one - 1/2 in KO side; one - 1/2 in KO bottom. Octagon boxes are used in the installation of ceiling or wall light fixtures. TS bracket features gauging tabs and recessed nailing spurs. UL 514-A listed, File E195978. Acceptable for use in2-hour fire rated walls and ceilings. 1-1/2 in deep - 15.5 cubic inches. UPC bar code.