Rochdale Transom
Note how some of the pencil-bevels of the borders(especially along the second border UP from the bottom) have been cut and grinder-trimmed to make them fit against the not-90-degree neigbouring pieces. As the edges of bevels are VERY thin, they can snap off when you cut them down to fit against an awkward neighbouring shape...it's safer to cut them down to a bit large, then fine-tune the shape with a grinder, rather than grozing them, which can "shell" or snap-off the edges of the thin glass.