CF 77

Invite nature into your building

Concept Folding® 77 combines high insulation and comfort with maximal transparency and aesthetics. This folding door system optimizes your way of living by drawing the exterior into your home, with a minimum of space usage. This high performance system offers different opening types, both inward and outward, to meet all possible requirements. Apart from the standard folding elements, CF 77 can feature a main door principle, in which the first leaf is used as an entrance door without affecting the other folding leafs.

CF 77 is available in 4 different threshold solutions, from high performance to low and even flush thresholds, in order to perfectly match all comfort and aesthetic requirements. Additionally, the CF 77-concept can perfectly be combined with the CS systems for windows, doors and curtain walls.

Furthermore, CF 77 is available in Functional and Slim-Line style. This CF 77-SL variant features a slimmer visible profile width.


Max. height vent  3000 mm 

Max. width vent  1200 mm 

Overall system depth frame  77 mm 

Overall system depth vent  77 mm 

Rebate height  25 mm 

Min. Glass thickness  6 mm 

Max. Glass thickness  63 mm 

Thermal breakFibreglass Reinforced Polyamide Strips  



Air tightness max. test pressure  4 (600 Pa)

Water tightness  9A (600 Pa)

Wind load resistance  C3 (1200 Pa)

Acoustic performance  Rw (C; Ctr) = 34 (-2;-5) / 45 (-1;-5) dB


Burglar resistance  RC2/WK2


Thermal insulation (Uf)  2.25 W/m²K