Looking for 12" plus brushed stainless sliding window stay

I need to hold a couple of large wooden frame windows open to at least 90 degrees.
I am searching the Internet for screw down sliding casement stays but there aren't that many, even fewer in brushed stainless, and I can't find any in 12"/305mm or higher.
I did find one 15" set in black, and "not suitable for coastal areas" which I assume means iron+rust not brass or steel, but apart from that no luck.
Does anyone know of a supplier of window furniture with a good range, but perhaps not a strong presence on the Internet?
Cheers
Dave R
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On Thu, 28 Jan 2016 14:57:50 +0000, David wrote:

Ummm....
.....just spotted part of the problem.
At 850mm wide they seem to class as small to medium doors.
So - same question, but for door stays!
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On Thu, 28 Jan 2016 18:26:48 +0000, jim wrote:

Looked at those but they seem to be for stopping a door slamming open or closed, not fixing it in place long term.
Cheers
Dave R
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On Thu, 28 Jan 2016 22:04:05 +0000, jim wrote:

Hmmm...let us define "long term" as more than a couple of minutes.
Friction stays do what they say, slow the open/close by means of friction so the door can't, for example, slam open or closed in a strong wind.
They aren't intended for use as a stay to keep a door or window open for several hours, and decent sites include a warning about this.
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