Set your location and language to prioritise localised information. Continue
Bottom Operated Std. Polyurethane roof window Centre-pivot - GLU 0051B

Bottom Operated Std. Polyurethane roof window Centre-pivot - GLU 0051B

This product is subject to regional limitations, please check availability on the "regions" tab.

The VELUX bottom-operated, centre-pivot roof window GLU 0051B is perfect for those looking for a maintenance-free and moisture-resistant window, the window is perfect for all rooms, especially humid rooms, with strong essential functionalities. Easy bottom-operation allows a higher position, for example due to a high knee wall 

• Great value for money from a two-layer pane with a Uw of 1.3 W/m2K.
• Refresh your home by slightly opening the window and fixing it in the top bushing.
• Easily rotate the window 180° for safe cleaning of the outer glass from the inside.
• Removable and cleanable ventilation filter protects your home from dust and insects while ventilating.
• Maintenance-free exterior covers increase peace of mind throughout the lifetime of the roof window.
• Quickly and easily add blinds using the unique Pick&Click!™ system.
• Refresh your home by slightly opening the window and fixing it in the top bushing. 

VELUX roofwindows roofwindow roof windows roof window skylight skylights

  • Heat insulation
    The low energy glazing provides reduced heat loss through the window and enhanced indoor comfort.Uw = 1.3

    Solar gain
    In the wintertime, the heat from the sun entering through the windows is a usable solar gain.g = 0.64

    Solar protection
    In warm climates and in rooms with large window areas, a sun protective coating provides a better indoor climate during summer periods.★★☆

    Sound insulation
    A combination of laminated glass and optimal glass thickness provides better sound insulation against noise from outside (traffic, playgrounds, etc). RwdB = 29(-1;-3)

    Energy balance
    The energy balance represents the ability of the roof window to utilise the passive solar gain and keep in the heat during winter. It also represents the ability to protect against the risk of overheating during summer.

    Outside strength
    Toughened outer glass makes your glazing more resistant to hail, heavy wind and snow loads.

    Glazing structure
    Glazing unit - Double-glazed
    Inner glass - 4 mm float glass
    Outer glass - 4 mm toughened glass
    Cavity - 16 mm
    Gas type - Argon

Technical specification
  • Unique ref.GLU-0051B
  • Product familyCenter Pivot
  • Product groupManual bottom operated
  • TypeObject (single object)
  • Date of publishing2019-08-05
  • Edition number3
  • Material mainPolyurethane
  • Material secondaryGlass
  • Designed inDenmark
  • Manufactured inPoland
  • BIMobject CategoryWindows - Roof Window
  • IFC classificationWindow
  • UNSPSC nameSkylights
  • UNSPSC code301718
  • Uniclass 2015 CodePr_30_59_98_72
  • Uniclass 2015 DescriptionRigid polyurethane frame roof window units
  • CSI MasterFormat 2014 Code08 61 00
  • CSI MasterFormat 2014 TitleRoof Windows
  • OmniClass Number23-17 13 23
  • OmniClass TitleRoof Windows
  • CSI UniFormat II CodeB3020
  • CSI UniFormat II TitleRoof Openings

Region availability

Bosnia and Herzegovina
Czech Republic