4/4 +4 Windscreen Frame

[Doofus]

I'm trying to find windscreen frame dimensions, and I can't must go and measure mine, because I don't own one

Can anybody give me an idea of overall width, and internal width between the body mount uprights? It would also be useful to know the rise on the curved bottom frame (how much higher it is at the centre point than the two ends).

I can find plenty of drawings on the net, but none of them show measurements, unsurprisingly.

TIA