I currently have an upper pvc window that needs replaced. It is a single window which I have been told ,is probably unsuitable for a single window and should be split into two opening windows. Due to the weight of a single window it has,over time, out a strain in the hinges and now probably just needs the whole unit replacing .this is what I am looking for in this quote .

The measurements of the current window is 127cm W x 80cm .