Bottom Operated Polyurethane roof window Tophung - GPU

Name: Bottom Operated Polyurethane roof window Tophung - GPU
Rating: 3.9 (28 reviews)

3.9(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

Links

Product urlhttps://contenthub.velux.com/api/public/content/42688-6f96c-c8402_downloadOriginal?v=317eacb9
Installation instructionshttps://contenthub.velux.com/api/public/content/product-guide_454362?v=ed3ff206
Product certificationhttps://www.velux.com/ce-marking
Technical descriptionhttps://velcdn.azureedge.net/-/media/marketing/uk/technical/bimcad/external%20product%20info%202020/external%20product%20info%20july%202020/external%20product%20information_gpu%20july%202020.pdf

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