The ENCRAFT TwinSash is designed to provide ultimate flexibility for fabricators and clients alike. It provides the option of combining the traditional casement window with traditional in ward opening fly screen option. There is a facility to incorporate a security grill or blinds for security or privacy. It was designed to facilitate maximum design coverage with the minimum number of profile sections providing fabricator and at the same time the end user with the ideal range of products to suit any window replacement program or building type in the fast growing construction industry. The TwinSash allows for the production of top hung and side hung casements, open in and open out to accept a full range of hardware in-line with latest European standards used, and meeting all the latest product testing standards.