Modern lever-handle design on interior and exterior; built-in keyed deadbolt lock for added security Interchangeable glass and screen for a clear view and a welcome breeze 1-1/4-in heavy-duty aluminum frame with weather stripping The adjustable expander conforms to uneven sills for a tight fit Adjustable-speed closer included EasyHang installation is faster and easier than traditional methods and offers a no-cutting system with mounting rail extenders for an exact fit every time LARSON storm doors save energy by adding an insulating barrier to your entry, natural sunlight and ventilation control Storm doors make your entrance more energy efficient reducing energy loss and increasing efficiency by up to 80% REVERSA-HINGE for right or left mounts