Hi Andy, I emailed you. Can I have a quote for my resale 4NG flat in up coming renovation, 3 Bedroom, living and Kitchen - aluminium casement windows, powdered white. Do you have the stopper when opening ? (ie. a lock to prevent opening too much, since I don't intend to have grill) Question: What are the options available for casement windows (e.g. tinted, etc) Thanks.