Casement Windows offer a sophisticated design with maximum ventilation and uninterrupted vertical views. This single-panel window
is hinged on the right- or left-hand side and can be opened by turning a handle. When opened, the panel swings outward
(similar to a door) to allow air in. - See more at: http://www.pgtindustries.com/products/windows/all?type_style=33#sthash.S34TAtkm.dpuf