The FAKRO FGH-V Balcony Roof Window has two sashes, the top-hung upper sash opening seamlessly through 45° while the lower sash slides out to the vertical position revealing built-in balustrades. Fakro offers the added benefit of being the only roof window manufacturer to use the patented topSafe® system. This provides the highest standard of security and safety currently available in standard roof windows and is supported by P2 anti-burglary glass which is used in the outer panes. The V40P automatic air inlet provides the added benefit of balanced ventilation at all times while close-grain redwood pine frames look simply sensational.