4x1-1/2" Steel Square Box /Brkt

Southwire New and Old Work 21 cu in Square Galvanized Steel Electrical Box Silver

Square electrical box is used to distribute power to a number of electrical devices where multiple conductors runs are split into two or more directions. The combination knockouts allow for greater wiring flexibility on the job. They are designed to work with combination Phillips/Slotted screw heads.
Made for extra shallow applications
Durable steel construction
UL and RoHS compliant for safety