All awning & hopper windows come equipped with our special MHB WML locking process, a multipoint locking system that has been engineered to suit our extremely-trim steel profiles. Giving exceptional stability and because of the superb insulating properties of our awning windows maximizing your ease and comfort. This means many http://localzzhq.com/Directory/ListingDisplay.aspx?lid=19777#.Yb9-gMnMLIU