A Single Casement is a Casement window with a single sash that operates inside a frame. In a Casement the sash is typically configured to swing on the sides. When the sash is configured to swing out from the top then this application is termed an “Awning”. A Casement can have sash that swing in or out. They can use a crank mechanism to swing out or they can be butt hinged to swing in or out. The locking mechanism is based on the operating mechanism.
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