The make of the lock is not Ferco, it is GU. I work for a company that supplies all kinds of hardware to keep PVCu windows and doors working. We stock many different types of multi point mechanisms including different G.U 's. You can identify from technical drawings and buy the lock you are wanting from our website "www.safensoundltd.com" our telephone number is 01422 378558, 9-5:30 mon-fri. Please don't hesitate in contacting us if we can be of any further assistance.
Chris White
April 2005