Hubbell-Raco 8235 2-1/8-Inch Deep, 1/2-Inch and 3/4-Inch Side Knockouts, Wood/Metal Stud Bracket, Welded 4-Inch Square Box The product is 4x2-1/8D TS BKT SQ Box Easy to use The product is manufactured in China Boxes are installed in ceilings Walls for lighting fixtures Switches or receptacles Combination cover screw Faster mud ring/cover installation