VISTA 4” DIAMETER STEEL STUD OCTOGONAL BOX WITH KNOCKOUT & BRACKET 54171-KSSX

Wraparound bracket for 2 1/2” and 3 5/8” steel stud. Support bracket for steel studs. 2 x 1/2” knockouts (4 on bottom, 2 on sides). 4 x 3/4” knockouts (2 bottom, 2 on side).