VELUX roof windows

GXLB 68

VELUX side-hung roof exit window

GXLB 3068

right-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.

사양

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

기술 사양

특징 참조GXLB-68
제품군Special function
제품분류Roof access
유형개체 (단일 개체)
게시일2026-02-01
에디션 넘버1

링크

기술 설명https://contenthub.velux.com/api/public/content/b42b2-1ff36-75409_downloadOriginal?v=7d77dc36

관련성

주 재료소나무
부 재료유리
설계국가덴마크
제조국가헝가리

분류

BIMobject 카테고리창 - 지붕창
IFC 분류창
ETIM 코드EC003112
ETIM 이름Skylight
Uniclass 2015 코드Ss_30_30_72_73
Uniclass 2015 설명Roof window systems
CSI 마스터 형식 2014 코드08 61 00
CSI 마스터 형식 2014 제목Roof Windows
OmniClass 번호23-17 13 23
OmniClass 제목Roof Windows

지역 가용성

유럽	아시아
라트비아	터키
루마니아
리투아니아
보스니아 헤르체고비나
불가리아
세르비아
슬로바키아
슬로베니아
에스토니아
우크라이나
체코 공화국
크로아티아
폴란드
헝가리