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ConceptWall 50 Attic Window

Technical information



Thermal insulation - Uw Double
0.23 Btu/hr.ft².°F
Thermal insulation - Uw Triple
0.25 Btu/hr.ft².°F


Air tightness
0.02 cfm/ft³
Air tightness
Water tightness
Wind load resistance
Class A5 (2000Pa)
Acoustics STC
41 dB
Acoustics OITC
35 dB


Impact resistance
* Note: Performances and properties may be different depending on the profile combinations


Max. dimensions & weight

Min. height of vent
600 mm
Max. height of vent
1500 mm
Min. width of vent
450 mm
Max. width of vent
3500 mm
Max. surface of vent
5.25 m2
Min. intertia mullion - Ix
14 mm
Max. intertia transom - Ix
612 mm
Min. intertia transom - Iy (glass load)
8 mm
Max. intertia transom - Iy (glass load)
59 mm


Min. width T-profile
50 mm
Min. visible width (interior view)
50 mm
Min. visible width (exterior view)
50 mm
Min. depth mullion
42 mm
Max. depth mullion
300 mm
Min. depth transom
5 mm
Min. wall inclination - standard
5 degrees
Max. wall inclination - standard
90 degrees


Glazing method
Dry glazing External glazing Glazing bead Structural Glued Glazing Structural Glued Stepped Glazing
Min. glass thickness - frame/element
28 mm
Max. glass thickness - frame/element
62 mm
Min. glass thickness - vent
24 mm
Max. glass thickness - vent
62 mm