An electrical box comprising a perimeter wall having a plurality of sidewalls and a base wall. Each sidewall of the plurality of sidewalls can be generally orthogonal, and directly adjoined by a rounded touch-safe corner, to another sidewall of the plurality of sidewalls. Additionally, a first end of the perimeter wall can be mechanically interlocked to, and coplanar with, a second end of the perimeter wall so as to provide the perimeter wall with a generally seamless sleeve configuration. The base wall, which may be separate from the perimeter wall, or adjoined to the perimeter wall in a monolithic structure, can be adjoined to at least some portions of the perimeter wall. Further, the base wall and the perimeter wall can define an inner region of the electrical box.