They are usually shaped: square, triangular, polygonal or smoothly curved to create a bow window. The common inside angles are 90, 120, 135 and 150 degrees.
Variety of profiles including:
- Passive, energy-saving VR90 Synergy, V90+, V82 or V70 Optimal Black with e-low glazing units up to 58 mm thick (Ug=0.5)
- Also available in proven quality of Veka 5-chambered profiles VP70, VS70, VR70 with efficient double glazing 24 mm thick as a standard (Ug=1.1)
Bay windows are used to increase the flow of natural light into a room, making it appear larger, but also to provide extended view of the outside. With wide range of finishing colours to choose from, they can also be an interior design feature.