The 5.5” by 2.75” plastic and aluminum box is the kind of case that requires a complicated installation process. Of the three separate layers of the case, the rear tray is the largest: it’s lined with shock-absorbent rubber around the edges and back, thick enough so that the iPhone 5 is held firmly in place when inserted, and deep enough the the device is fully recessed. Next goes the aluminum bezel frame, coupled with the non-adhesive…