The cutout was rectangular, with the electrical wiring entering from behind the backsplash. In the close-up photograph, the opening measures approximately five inches across, although the image doesn't establish a final fabrication dimension. The surrounding stone remained intact, and the wood framing behind the opening was visible.
The metal box was held close to the stone surface. That gave us a direct reference for the box's size and position relative to the opening. This is important because the cutout needs to accommodate the electrical components without unnecessarily enlarging the visible opening. With stone, I don't like removing extra material just to make installation easier. If a cutout is too small, there may be an opportunity to adjust it. If it's too large, that missing material isn't coming back. The better approach is to establish the required dimensions, check the actual component, and keep the opening as controlled as possible.
This is particularly important on a finished backsplash. Any damage beyond the intended cutout could mean additional repair work or, in the worst case, replacement of a larger stone section. The objective was to provide the necessary space for the outlet while preserving the existing surface around it.