6000 px).Process:
Photos of the object; adjusting the textures of front, top and sides to make them vertically and horizontally aligned; erase unwanted details and shadows; import inside Blender (Image As Plane); modeling, adjusting the mesh and UV maps.You can change the decal I made HellTech with your own. On the 3, 2 are flat face objects with the logo textured on it, 1 is masked on the main body tecture and driven by an empty, so you can place it where you want on the sides.
Mainly worked for Cycle render.The shader's nodes let you tweak all textures via Color Ramps.Details: https://e10blender.wordpress.com/shop-architectural-assets/e10s-electric-box-05/