Safe Reliable: MAKERELE electrical boxes 2 gang built-in wire clamp, fixing screws and positioning pieces, easy to simply hammer into the stud, easy to assemble the fixed wire, and leave enough space layout. Product Design:MAKERELE electrical outlet box for drywall 4 "deep, 26 cubic" capacity. And with a 2-hour fire rating, you can provide excellent security protection for your electrical system and safeguard the safety of your home or business space.