Steel City 1-Gang 4 in. 2-1/8 in. D New Work Metal Utility Box 5837112-25R - The Home Depot

The Square 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. The box is 2-1/8 in. deep. Additionally, this square box is UL and RoHS compliant