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ConceptFolding 77 High Insulation

Technical information



Thermal insulation - Uf
2.25 W/m²K


Air tightness
Class 4 (600Pa)
Water tightness
Class 9A (600Pa)
Wind load resistance
Class B3 (1200Pa)


Opening & closing resistance
Class 3
* Note: Performances and properties may be different depending on the profile combinations


Max. dimensions & weight

Min. height of element
678 mm
Max. height of element
3130 mm
Min. height of vent
600 mm
Max. height of vent
3000 mm
Min. width of vent
400 mm
Max. width of vent
1200 mm
Max. weight of vent
120 kg


Min. width 4-pane
154 mm
Min. width T-profile
48 mm
Min. height treshold
5 mm
Depth frame
77 mm
Depth Vent
77 mm
Depth frame-vent
77 mm


Rebate height
14 mm
Glazing method
Dry glazing Siliconized glazing Internal glazing Glazing bead
Min. glass thickness - frame/element
6 mm
Max. glass thickness - frame/element
63 mm
Min. glass thickness - vent
6 mm
Max. glass thickness - vent
63 mm