Garvin 52171-AB 4" Square Junction Box, 2-1/8" Deep w/ Vertical Right Angle Bracket

2-1/8 in deep 4 in square boxes with vertical right angle brackets and (6) 1/2 in & (3) 1/2 in-3/4 in side knockouts and (3) 1/2 in& (2) 1/2 in-3/4 in bottom knockouts provide extra rigid support when attached to wood or metal studs. They are used when 4 in square boxes must be mounted directly to wood or metal studs.