RACO Square Box, 4 in. square x 1-1/2 in. deep, welded, has two sides with tear-drop pryouts for NMSC cable. Inside of box are four NMSC clamps. A third side opposite the support bracket has two 1/2 in. and one patented TKO knockout for 1/2 in. or 3/4 in. knockout use. Bottom of box has one 1/2 in. knockout. Box has FM bracket for metal or wood stud mounting and four NMSC clamps.