Introduction
The top-hung window is manufactured in high quality natural pine with the option of white-painted or  lacquered pine internal finish (GPL) or white polyurethane internal finish (GPU). It is suitable for installation into roof pitches between 15° and 55°. For installations between 55° and 75° special springs will be required.

Not advised for high level (out of reach) installation. The bottom edge of the window should be placed approx. 0.90 – 1.20m above the floor for ease of opertion.

Roof pitch
15° - 55°

For installations between 55° - 75° special springs will be required


Features
  • Ventilation bar with dust and insect filter – Allows fresh air to enter the room while the window is securely closed
  • Sash rotates 180° from inside – Allows easy and convenient cleaning
  • Barrel bolt – Allows the window to be locked in to position at 180° for secure cleaning of the exterior pane internally

Operation
The sash which is top-hung is opened and closed using the bottom handle and can remain open in any position up to 45o.

Glazing
Glazing unit  Description
(--34) glazing
Only available for roof window type GPU 
Double glazed, laminated opaque inner pane, toughened outer pane. 
(--50) glazing
Double glazed, toughened outer pane. 
(--60) glazing
Double glazed, laminated inner pane, toughened outer pane with easy-to-clean coating, enhanced noise reduction. 
(--62) glazing  Triple glazed, laminated inner pane, toughened outer pane with easy-to-clean and anti-dew coating. Provides enhanced U-value and noise reduction. 
(--66) glazing  Triple glazed, laminated inner, toughened outer pane with easy-to-clean, anti-dew coating and enhanced noise reduction.
(--68) glazing  Triple glazed, laminated inner, toughened outer pane with easy-to-clean, anti-dew coating and enhanced noise reduction.
(--70) glazing  Double glazed, laminated inner pane, toughened outer pane. 

Maintenance
The pane should be cleaned with a soft, clean, lint-free cloth or non-abrasive sponge. The rest of the window can be cleaned with ordinary household cleaners. The filter can be removed and either washed or replaced.

Guarantee
  • 10 year VELUX guarantee on windows and flashing kits.
  • 3 year guarantee on blinds, shutters, awnings and electrics.

Interior finish

Cladding
NCS standard colour (Grey): S 7500-N nearest RAL standard colour: 7043.

Also available: titanium zinc, copper or coloured aluminium.


Best practice installation

Installation products recommended by VELUX
Flashings 
Installation products
Linings
Single installation (ED_)
Twin installation (EB_)
Combi installation (EK_)
Insulation Collar (BDX)
Underfelt Collar (BFX) includes transverse drainage gutter
Vapour Barrier (BBX)
Linings up to 30 cm roof thickness (LSB)
Linings up to 40 cm roof thickness (LSC)
Linings up to 50 cm roof thickness (LSD)

Blinds, Awnings/Shutters
Interior sunscreening  Awning and shutters  Accessories 
Blackout blind - Manual (DKL)
Roller blind - Manual (RFL)
Roller blind - Manual (RHL)
Roman blind - Manual (FHB)
Blackout energy blind - Manual (FHC)
Flying pleated blind - Manual (FHL)
Venetian blind - Manual (PAL)
Duo blackout blind - Manual (DFD)
Awning blind - Manual (MHL)
Roller shutter - Manual (SHL)
Insect screen - Manual (ZIL)

Technical Data

Please note, not all glazing variants are available in all sizes.

Size  Window Options Exterior Frame
W x H
Visible Glass
e x f
Lining Rebate
k x l
CK04  GPL, GPU  550 x 978
371 x 783  495 x 919 
CK06  GPL, GPU  550 x 1178  371 x 983  495 x 1119 
FK06  GPL, GPU  660 x 1178  481 x 983  605 x 1119 
FK08  GPL, GPU  660 x 1398  481 x 1183  605 x 1339 
MK04  GPL, GPU  780 x 978  601 x 783  725 x 919 
MK06  GPL, GPU  780 x 1178  601 x 983  725 x 1119 
MK08  GPL, GPU  780 x 1398  601 x 1203  725 x 1339 
MK10  GPL, GPU  780 x 1600  601 x 1405  725 x 1541 
PK04  GPL 942 x 978  763 x 783  887 x 919 
PK06  GPL, GPU  942 x 1178  763 x 983  887 x 1119 
PK08  GPL, GPU  942 x 1398  763 x 1203  887 x 1319 
PK10  GPL, GPU  942 x 1600  763 x 1405  887 x 1541 
SK06  GPL, GPU  1140 x 1178  961 x 983  1085 x 1119 
SK08  GPL, GPU  1140 x 1398  961 x 1203  1085 x 1339 
SK10  GPL, GPU  1140 x 1600  961 x 1203  1085 x 1119 
UK04  GPL 1340 x 978  1161 x 783  1285 x 919 
UK08  GPL, GPU  1340 x 1398  1161 x 1203  1285 x 1339 

Cross section/
measurements (mm)

Size chart

Technical Data 

Ventilation and daylight area

Size  Ventilation flap – free area [10^3mm²]*
Ventilation flap – equivalent area [10^3mm²]*
2 layer/3 layer pane
Ventilation – open window manual [m²]*
Effective daylight area [m²]
CK04  2.8 2.6/2.0 0.39 0.29
CK06 2.8 2.6/2.0 0.48 0.37
FK06  3.7  3.1/2.2 0.60 0.47 
FK08  3.7  3.1/2.2 0.72 0.58
MK04  4.5 3.7/2.5 0.58 0.47
MK06  4.5 3.7/2.5 0.72 0.59
MK08  4.5 3.7/2.5 0.87 0.72
MK10  4.5 3.7/2.5 1.01 0.85
PK04  6.1 4.6/2.9 0.72 0.60
PK06  6.1  4.6/2.9 0.89 0.75 
PK08  6.1  4.6/2.9 1.08 0.92 
PK10  6.1 4.6/2.9 1.25 1.07
SK06  7.2 5.6/3.5 1.09 0.95
SK08  7.2 5.6/3.5 1.32 1.16
SK10  7.2 5.6/3.5 1.54 1.35
UK04  10.6  6.6/4.1 1.05 0.91
UK08  10.6  6.6/4.1 1.58 1.40

*Measured to EN 13141-1


Technical data

Glazing

 Pane variant --34 --50 --60  GPL --62 GPU --62 
Thermal transmittance, Uw [W/m2K]
1.3 1.3 1.3 0.83 0.85
Thermal transmittance, Ug [W/m2K]
1.0 1.0 1.0 0.5 0.5
Sound insulation, Rw [dB]
35 32 37 42 42
Air permeability
Class 4 Class 4 Class 4 Class 4 Class 4
Light transmittance, Tv  0.51  0.69 0.62 0.70 0.70
Total solar energy transmittance, g  0.46  0.46 0.30 0.52 0.52


 Pane variant --66 --68 --70  EN/ISO Standard
Thermal transmittance, Uw [W/m2K]
1.0 1.1 1.3 EN ISO 12567-2
Thermal transmittance, Ug [W/m2K]
0.5 0.5 1.0 EN 673
Sound insulation, Rw [dB]
37 35 35 EN ISO 10140-2
Air permeability
Class 4 Class 4 Class 4 EN 1026
Light transmittance, Tv  0.71 0.72 0.68 EN 410
Total solar energy transmittance, g  0.51 0.52 0.46 EN 410