Make of component,with good heat resistance,which can be installed in commercial,industrial or residential. Rounded corners,safe and anticollision without hurting hands,and the edges is smooth and delicate without burrs. Designs to install easily and firmly in single electrical box. Our electrical box extenders is designs to provide for extending electrical box plastics to accommodate new or existing wiring. Not need to dismantle the existing box or reposition wiring.Simply attach our extenders to your current outlets,you ready to expand your electrical option.