A bay window is a generic name for all protruding window constructions, regardless of the number of segments, bays can incorporate virtually any angle, but would normally be either 90º,135º or 150º.
Bay windows invariably let in more light than traditional casement windows. Furthermore, they give a wider view and increased living area. Bay windows are often load-bearing and it is imperative that fully reinforced frames are employed when undertaking replacements. All of Scanda Window and Doors bay installations incorporate fully reinforced corner-posts and bay-poles and are set on jack-pole supports with spreader-plates, to ensure rigidity and stability.