2-1/8in deep with 4in square boxes with wood spike vertical brackets and (6) 1/2in & (3) 1/2in-3/4in side knockouts and (3) 1/2in & (2) 1/2in-3/4in bottom knockouts are used when 4in square boxes must be mounted directly to wood or metal studs.

In stock
Gtin 00655222856753
Mpn 52171-SWB
Condition new