2-1/8in deep, 4in square boxes with flat 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 00655222856746
Mpn 52171-FS
Condition new