Abstract: Example electrical boxes include a lid, a base, and side walls. The lid includes a lid structure comprising a lid upper surface structure and a lid lower surface structure. The base includes a base structure comprising a base upper surface structure and a base lower surface structure. The side walls extend between the lid and the base, forming an interior configured to house electrical components. The lid upper surface structure can mate with a lower surface structure of a higher electrical box in a stack. The base lower surface structure can mate with an upper surface structure of a lower electrical box in a stack. The lid upper surface structure can be identical to the base upper surface structure of a lower electrical box. The lid lower surface structure can be identical to the base lower surface structure of a higher electrical box.