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

Unique ref.: GLU-0051B
Brand: VELUX roof windows
Product family: CEE Roof Windows
Product group: Standard
Date of publishing: 2019-08-05
Edition number: 3
Type: Object (single object)
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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. 

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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

Material main: Polyurethane
Material secondary: Glass
Designed in: Denmark
Manufactured in: Poland

BIMobject Category: Windows - Roof Window
IFC classification: Window
UNSPSC name: Skylights
UNSPSC code: 301718
Uniclass 1.4 Code: JL11
Uniclass 1.4 Description: Rooflights/Roof windows
Uniclass 2.0 Code: PR-59-72
Uniclass 2.0 Description: Roof Window Units
Uniclass 2015 Code: Pr_30_59_98_72
Uniclass 2015 Description: Rigid polyurethane frame roof window units
NBS Reference Code: 59-72
NBS Reference Description: Roof Window Units
CSI MasterFormat 2014 Code: 08 61 00
CSI MasterFormat 2014 Title: Roof Windows
OmniClass Number: 23-17 13 23
OmniClass Title: Roof Windows
CSI UniFormat II Code: B3020
CSI UniFormat II Title: Roof Openings
This product is available in:
  • Bosnia and Herzegovina
  • Bulgaria
  • Croatia
  • Czech Republic
  • Estonia
  • Hungary
  • Latvia
  • Lithuania
  • Poland
  • Romania
  • Serbia
  • Slovakia
  • Slovenia

BIMobject SEEK Properties

Windows - Roof Windows

Name Value
Angle 15 deg — 90 deg
Application Roof
Bullet Resistance Rating False
Cladding - Exterior Aluminum, copper or zink
Cladding - Interior N/A
Colour Exterior ALUMINIUM: S 7500-N/RAL 7043, or ZINK: Titanzink or COPPER: -
Colour Interior NCS:S 0500-N/RAL 9003
Frame Material Polyurethane
Glazing Type Double-glazed ; Inner glass:4 mm float glass ; Outer glass:4 mm toughened glass ; Cavity:16 mm ; Gas type:Argon
Height 978 mm — 1398 mm
Installation Style insitu
Internal Frame Material Polyurethane
Material Polyurethane/glass/aluminium, copper or zink
Method Of Operation Bottom Operated
Number Of Windows In Unit 1
Width 660 mm — 942 mm
Window Style sloped roof window




This property set allows objects to be COBie UK BIM Level 2 classified

Name Value
Material Polyurethane/glass/aluminium, copper or zink