- Provides a sleek and streamlined finish as the window is installed lower in the roof
- Same brackets used for recessed and standard installation heights
- Includes BDX collar which insulates around the roof window frame, reducing heat loss and eliminating cold bridges
- Supplied with BFX underfelt collar and transverse drainage gutter
- Suitable for roof pitches between 20-90?
- Suitable for natural slate up to 8 mm thick