With a range of glazing, operation and finish options available, this VELUX centre-pivot window boasts innovative Thermo-Technology™ which ensures your house can stay comfy and warm by transferring less energy. Perfectly suited for transforming your small room with a plethora of daylight, it features a handy and elegant top control bar which allows fresh air into your home through a ventilation flap even when the window is shut while the filter stops dust and insects. For cleaning from the safety of inside your home, it seamlessly rotates 180° and secures into position with a built-in barrel bolt. Features & Benefits: VELUX GGL MK08 Centre Pivot Roof Window - 78cm x 140cm All the standard glazing options feature premium benefits such as VELUX's unique rain noise reduction, UV filter, toughened glass and safety lamination. The safety lamination stops the glass from falling in the event of accidental breakage while the toughened glass provides further strength to the external pane to shield against exterior environmental issues. The UV filter protects your furniture against harmful UV rays from the sun which can cause fading while the rain noise reduction helps to ensure a serene night's sleep without being affected by heavy rainfall on the window. For instance, an MK04 blind for a VELUX window will fit perfectly an MK04 VELUX window as they’re manufactured to be 98cm x 78cm.