If so, what kind of window ledge do you have?
We've had 600mm windows fitted and the window sills plastered - but the finish on the edge is not great (the metal edge hasn't bent round terribly well) so we are looking to see if there is some kind of liner we could get to fit in the window.
So far, we've not found anything but I wondered if anybody else has something like that and knows where we could find it?