All awning & hopper windows arrive Geared up with our unique MHB WML locking process, a multipoint locking method that's been engineered to suit our ultra-slim steel profiles. Giving optimum protection and due to the excellent insulating Qualities of our awning windows maximizing your ease and comfort. Storefront exterior – http://usafeatured.com/directory/listingdisplay.aspx?lid=11714