Casement doors are advised as a single girdle planning a wonderful main entrance or as a double sash, combining the indoors with the outdoor. These Greentech doors can be used for yard, deck or balcony access. It is a window or a door that is attached to its outer frame by one or more hinges. Casement doors can also be used as room dividers, either in place of a wall to create a dramatic effect or to add an open and airy feel to an existing wall. It can be joined at the bottom or on the top. Both are used individually or in pairs within a common frame, in which case they are hinged on the outside.