GXLA 68

VELUX side-hung roof exit window

GXLA 3068

left-hung seen from the outside

(interior finish - wood, clear lacquer; exterior cover - aluminum dark gray)

The VELUX craftsman’s roof exit GXLB with right opening, is designed to provide safe and convenient access to the roof. It opens outward and stays firmly in place.

Made from high-quality lacquered or white-painted pine wood like our standard wooden roof windows.

The window used as a craftsman's roof exit can be installed in roof pitches between 15° and 60° to the horizontal.

Window Code	Width in mm	Height in mm	Effective Daylight Area in m2	Geometric Free Area in m2
FK06	660	1178	0.47	0.54
MK04	780	978	0.47	0.53
MK06	780	1178	0.59	0.66
MK08	780	1398	0.72	0.81

Due to the extra sound reduction feature, background ventilation is not possible.

规格

Performance window characteristics	Performance
Thermal transmittance (U-value)	1.1 W/(m²K)

Light transmittance (τ,v)	0.68

Total solar energy transmittance (g-value)	0.49

Sound insulation (Rw)	35(-1;-3)dB

Air permeability, [class]	3

External fire performance - British [class]	AA

External fire performance - European [class	npd

Impact resistance [class]	3

Load-bearing capacity of safety devices	✓

Reaction to fire [class]	C-s1,d2

Resistance to snow load	See glazing composition

Resistance to wind load [class]	C3

Water tightness [class]	9A





Glazing unit	Composition (from inside to outside)
Triple-glazed	6.8 mm float glass - 13 mm Argon - 3 mm heat strengthened glass - 13 mm Argon - 4 mm toughened glass