I'm looking to buy a 630x750mm tilt and turn window for my bathroom to
fit myself. So far I have looked at Dunster House, the price seems good
but does anybody have any experience of the quality? Also I'm not
overly keen on UPVC, so can anybody recommend a source of wooden ones
(any more links to UPVC suppliers would also be appreciated)? I may
also consider building one myself if I can get hold of the mechanism,
but again I can't find a supplier for them.

Any help much appreciated.