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ConceptSystem 77

Technical information



Thermal insulation - Uf
1.8 W/m²K
Thermal insulation - Uw
1.5 W/m²K


Air tightness
Class 4 (600Pa)
Water tightness
Class 9A (600Pa)
Wind load resistance
Class C3 (1200Pa)
Acoustics - Rw(C;Ctr)
42(-2; -4) dB


Burglar resistance
RC2 RC3 WK2 WK3 PAS 24
Fire resistance
EI₁ 30 EI₂ 30 EI₂ 60
Bullet resistance
FB4 FSG Kalashnikov
Opening & closing resistance
Class 3
* Note: Performances and properties may be different depending on the profile combinations


Max. dimensions & weight

Min. height of element
668 mm
Max. height of element
2868 mm
Min. width of element
518 mm
Max. width of element
1268 mm
Min. height of vent
600 mm
Max. height of vent
2800 mm
Min. width of vent
450 mm
Max. width of vent
1200 mm
Max. weight of vent
170 kg


Min. frame width (inward opening)
51 mm
Min. vent width (inward opening)
33 mm
Min. frame-vent width (inward opening)
89 mm
Min. frame width (outward opening)
17.5 mm
Min. vent width (outward opening)
76 mm
Min. frame-vent width (outward opening)
93.5 mm
Min. width T-profile
76 mm
Depth frame
68 mm
Depth Vent
77 mm
Depth frame-vent
77 mm


Rebate height
25 mm
Glazing method
Dry glazing Siliconized glazing Internal glazing External glazing Glazing bead
Min. glass thickness - frame/element
4 mm
Max. glass thickness - frame/element
52 mm
Min. glass thickness - vent
4 mm
Max. glass thickness - vent
63 mm