Profile: Selectaglaze Ltd. is a manufacturer of secondary window systems. We are an ISO 9001 certified company. Our products include horizontal & vertical sliding, hinged casement, lift out, fixed, and shaped secondary glazing products. Horizontal sliding windows are very versatile, and allow easy access to the outer window. Vertical sliding units are ideal for treating traditional sash windows, and are particularly suited to the refurbishment and upgrade of historic buildings. Our lift-out units offer a practical treatment for windows which are rarely used, or as side or over lights in combination with other windows. Fixed panels are generally used as side or over lights in combination with other windows, and are also extensively used to treat curved windows.