Publish your products
Bottom Operated Polyurethane roof window Tophung - GPU
Bottom Operated Polyurethane roof window Tophung - GPU
Bottom Operated Polyurethane roof window Tophung - GPU
Bottom Operated Polyurethane roof window Tophung - GPU
Bottom Operated Polyurethane roof window Tophung - GPU
Bottom Operated Polyurethane roof window Tophung - GPU

    Bottom Operated Polyurethane roof window Tophung - GPU

    3.9 out of 5 stars3.9(28 reviews)

    GPU is a top-hung roof window that can be installed on roof pitches from 15-55° (and up to 75° with specially manufactured springs). The sash can remain open in any position up to an angle of 45° to enjoy panoramic, uninterrupted views. The window is operated from a handle on the bottom of the sash.  There is a ventilation flap along the top sash of the window which allows fresh air to enter the room.  For ease of cleaning of the outer glass pane, the window can also be operated as centre-pivot.

    The frame and sash are made of high-quality moulded polyurethane around a core of thermally modified timber with a white lacquer finish.  Therefore, giving a maintenance free finish.

    Externally the window has maintenance-free cover parts.

    Window Sizes
    :
    External frame
    W x H mm:
    Effective daylight
    areas: m²
    Geometric free
    area: m²
    CK04         550 x 978     0.29     0.39
    CK06 550 x 1178     0.37     0.48
    FK06 660 x 1178     0.47     0.60
    FK08 660 x 1398     0.58     0.72
    MK04 780 x 978     0.47     0.58
    MK06 780 x 1178     0.59     0.72
    MK08 780 x 1398     0.72     0.87
    MK10 780 x 1600     0.85     1.01
    PK06 942 x 1178     0.75     0.89
    PK08 942 x 1398     0.92     1.08
    PK10 942 x 1600     1.07     1.25
    SK06 1140 x 1178     0.95     1.09
    SK08 1140 x 1398     1.16     1.32
    SK10 1140 x 1600     1.35     1.54
    UK08 1340 x 1398     1.40     1.58

    VELUX roofwindows roofwindow roof windows roof window skylight skylights top hung TOPHUNG BOTTOM OPERATED bottomoperated

    Specification

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

      Ventilation
      Capacity
      at 4Pa
      :
      at 8Pa
      :
      at 10Pa
      :
      at 20Pa
      :
      CK04 4.0 l/s 5.7 l/s 6.4 l/s 9.3 l/s
      CK06 4.0 l/s 5.7 l/s 6.4 l/s 9.3 l/s
      FK06 4.8 l/s 6.9 l/s 7.8 l/s 11.3 l/s
      FK08 4.8 l/s 6.9 l/s 7.8 l/s 11.3 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
      MK10 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
      SK08 8.5 l/s 12.3 l/s 13.9 l/s 20.1 l/s
      SK10 8.5 l/s 12.3 l/s 13.9 l/s 20.1 l/s
      UK08 10.0 l/s 14.5 l/s 16.3 l/s 23.5 l/s






      Ventilation
      :
      Equivalent
      Area : mm²
      Geometrical Free
      Area : mm²
      CK**   2600      2800
      FK**   3100      3700
      MK**   3700      4500
      PK**   4600      6100
      SK**   5600      7200
      UK**   6600      10600



      Finishes:
      Internal - White maintenance-free
      Finished with polyurethane lacquer (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).
      Untreated Copper.
      Titanium Zinc.

      VELUX roofwindows roofwindow roof windows window skylight skylights

    Technical specification
    • Unique ref.GPU
    • Product familyTop hung
    • Product groupManual bottom operated
    • TypeObject (single object)
    • Date of publishing2019-08-06
    • Edition number5
    Related
    • Material mainPolyurethane
    • Material secondaryGlass
    • Designed inDenmark
    Classification
    • BIMobject CategoryWindows - Roof Window
    • IFC classificationWindow
    • UNSPSC nameRoofing accessories
    • UNSPSC code301516
    • Uniclass 2015 CodePr_30_59_98_72
    • Uniclass 2015 DescriptionRigid polyurethane frame roof window units
    • CSI MasterFormat 2014 Code08 62 00
    • CSI MasterFormat 2014 TitleUnit Skylights
    • OmniClass Number23-17 13 23
    • OmniClass TitleRoof Windows
    • CSI UniFormat II CodeB3020
    • CSI UniFormat II TitleRoof Openings

    Region availability

    Europe North America Asia Oceania
    Austria
    Canada
    China
    New Zealand
    Belarus
    United States
    Türkiye
    Belgium
    Bosnia and Herzegovina
    Bulgaria
    Croatia
    Czech Republic
    Denmark
    Estonia
    Finland
    France
    Germany
    Hungary
    Italy
    Latvia
    Lithuania
    Netherlands
    Norway
    Poland
    Portugal
    Romania
    Russia
    Serbia
    Slovakia
    Slovenia
    Spain
    Sweden
    Switzerland
    Ukraine
    United Kingdom