Ordered replacement heated wing mirror (electrically folding/adjusting) for MB C-class 250 blutec sport(4-door saloon), 64-plate. Mirror was identical in shape and design but appears thinner glass and less robust in construction. It is a few millimetres shorter in width than the original. But this was a compatible brand and not an official MB product. It took a bit of force to fit, as I suspect the dimensions of the clips were not truly accurate. However, after some gentle persuasion, managed to fit it. From an outside casual view point and the diving position, the mirror looks fine. Only on close inspection do you see it's slightly smaller than the original. But considering the huge price difference between this mirror and an official Mercedes Benz one, I'm not grumbling! And no one really notices unless you point it out.