Steel Stud Device Box, Gangable, 2-1/2 in. Deep, 16 Cu. In., with MSB Metal Stud Bracket, Brackets set back for two layers of 1/2 in. Drywall, 2-3/8 & 3-5/8 in. Stud Sizes, Cable Pryouts Ends, Raised ground screw, NMD90 and AC90 (20-Pack) 3104MSBU1 DEVICE BOX MSBU1 2 X 3 X 2.5"