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One frame. More than three times the daylight - The new VELUX 3in1 roof window


Explore a new world of daylight and fresh air with the VELUX GGLS 3in1 placing three windows in one frame. The slim frame and white internal finish makes for an aesthetic integration into the roof and makes the 3in1 a popular choice for loft conversions. The three sashes provides an extensive view to the outside and is operated via the operation bar placed at the top part of the sash. The centre pivot window rotates up to 180 degrees to allow for easy cleaning of the outer glass from inside the room. Use the ventilation flap to let in fresh air without opening the window. The middle sash is fixed and cannot be opened, nor does it have a ventilation flap. Choose between several glazing options to find the one that best suits your needs.

  • Premium quality roof window.
  • Fixed centre sash achieving a balance between daylight and ventilation
  • White painted interior finish works with all modern interiors and is low maintenance
  • Extra slim profiles for an enhanced view and increased daylight
  • 2 glazing options: double glazed, triple glazed panes with many features available.
  • This white painted roof window is suitable for roof pitches between 15 - 90 degrees.
  • 180 degrees rotation - for easy cleaning of the external pane and with locks in position feature.
  • Easy to maintain.
  • 10 years guarantee.

Installing your window correctly will guarantee it a long lifetime and ensure it functions in an optimal way.


You will find our easy-to-use installation guide here