Manual bottom operation, Centre-pivot - GGL-BManual bottom operation, Centre-pivot - GGL-BManual bottom operation, Centre-pivot - GGL-BManual bottom operation, Centre-pivot - GGL-BManual bottom operation, Centre-pivot - GGL-B
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Manual bottom operation, Centre-pivot - GGL-B

The VELUX bottom-operated, center-pivot roof window GGL-B offers the great essential functionalities of the VELUX brand. Bottom operation is special designed for applications where the window need to be placed in a high position 130-160 cm above floor level.  The roof window that can be installed on roof pitches from 15-90°. 

  • Removable and cleanable ventilation filter protects your home from dust and insects while ventilating.
  • Adjust the bottom handle position to ventilate your home without opening the window.
  • Open the top control bar to the ventilation position for fresh air through a closed window.
  • Easily rotate the window 180° for safe cleaning of the outer glass from the inside.
  • Barrel bolts lock the rotated window into place for safe and easy cleaning of the outer glass from inside.
  • Quickly and easily add blinds by simply clicking them into the pre-fitted brackets.
  • Frame and sash made of laminated pine wood are finished with triple coat. the exterior of the frame and sash is metal-clad and therefore maintenance-free. the window is equipped with an insulating glass unit.
  •  

    Window
    Sizes :
    External frame
    W x H : mm
    Effective daylight
    areas: m²
    Geometric free
    area: m²
    CK02 550 x 778    0.22    0.26
    MK04 780 x 978    0.47    0.53
    MK06 780 x 1178    0.59    0.66
    MK08 780 x 1398    0.72    0.81
    PK06 942 x 1178    0.75    0.83
    PK08 942 x 1398    0.92    1.01
    PK10 942 x 1600    1.07    1.17
    SK06 1140 x 1178    0.95    1.03

    VELUX roof windows roof window roof windows roof window skylight skylights

Specification
  • Background Ventilation (via Ventilation Flap based on double glazed windows):

    Ventilation
    Capacity :
    at
    4Pa :
    at
    8Pa :
    at
    10Pa:
    at
    20Pa :
    CK02 – 4.0 l/s 5.7 l/s 6.4 l/s 9.3 l/s
    MK04 – 5.8 l/s 8.4 l/s 9.5 l/s 13.7 l/s
    MK06 – 5.8 l/s 8.4 l/s 9.5 l/s 13.7 l/s
    MK08 – 5.8 l/s 8.4 l/s 9.5 l/s 13.7 l/s
    PK06 – 7.1 l/s 10.2 l/s 11.5 l/s 16.6 l/s
    PK08 – 7.1 l/s 10.2 l/s 11.5 l/s 16.6 l/s
    PK10 - 7.1 l/s 10.2 l/s 11.5 l/s 16.6 l/s
    SK06 – 8.5 l/s 12.3 l/s 13.9 l/s 20.1 l/s



    Ventilation
    :
    Equivalent
    Area : mm²
    Geometrical Free
    Area : mm²
    CK**   2600     2800
    MK**
       3700
         4500
    PK**
       4600
         6100
    SK**
       5600
         7200


    Finishes:
    Internal -  White-painted finished with triple coat,
    white painted (NCS standard colour: S 0500-N, nearest RAL standard colour: 9003).

    External – Maintenance-free cover parts. 
    Aluminium dark grey,(NCS standard colour: S 7500-N, nearest RAL standard colour 7043) 

Technical specification
  • Unique ref.GGL-B
  • Collection setCenter Pivot
  • CollectionManual bottom operated
  • TypeObject (single object)
  • Date of publishing2021-08-27
  • Edition number1
Related
  • Material mainPine
  • Material secondaryGlass
  • Designed inDenmark
Classification
  • BIMobject CategoryWindows - Roof Window
  • IFC classificationRoof
  • UNSPSC nameRoofing accessories
  • UNSPSC code301516
  • Uniclass 2015 CodeSs_30_30_72_73
  • Uniclass 2015 DescriptionRoof window systems
  • CSI MasterFormat 2014 Code08 61 00
  • CSI MasterFormat 2014 TitleRoof Windows
  • OmniClass TitleRoof Windows
  • OmniClass Number23-17 13 23
  • CSI UniFormat II CodeB3020
  • CSI UniFormat II TitleRoof Openings

Region availability

Europe
Netherlands
Belgium