4 11/16 SQUARE STEEL STUD JUNCTION BOX WITH KNOCKOUTS
VISTA 4 11/16 SQUARE STEEL STUD JUNCTION BOX WITH KNOCKOUTS 72171-KSSX
Wraparound brackets for 2 1/2 and 3 5/8 steel stud. 6 x 1/2 knockouts (4 on bottom, 2 on sides). 4 x 3/4 knockouts (2 on bottom, 2 on sides).