CF 77

CF 77

Concept Folding 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 Slim-Line style. This CF 77-SL variant features a slimmer visible profile width.

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Technical information

Properties

Min. Visible width T-profile3 1/2 in. 
Visible width meeting section5 11/16 in. 
Max. height vent118 1/8 in. 
Max. width vent47 1/4 in. 
Max. weight element264 lbs 
Overall system depth frame3 1/16 in. 
Overall system depth vent3 1/16 in. 
Rebate height9/16 in. 
Visible height vent3 13/16 in. 
Min. Glass thickness1/4 in. 
Max. Glass thickness2 1/2 in. 
Thermal breakFibreglass Reinforced Polyamide Strips  

Performance

Comfort
Air tightness max. test pressure0.1 cfm/ft²
Water tightness8 psf
Design pressure55
Acoustic performance STC (ASTM E90-09/1332)45
Acoustic performance OITC (ASTM E90-09/1332)38
PG Rating55
Safety
Burglar resistance (EN)RC2/WK2
Energy
Thermal insulation Uw - Double0.34 Btu/hr∙ft²∙°F
Thermal insulation Uw - Triple0.27 Btu/hr∙ft²∙°F

Opening elements

  • Folding type 2-0-2Folding type 2-0-2
  • Folding type 3-0-3Folding type 3-0-3
  • Folding type 3-1-2Folding type 3-1-2
  • Folding type 4-0-4Folding type 4-0-4
  • Folding type 4-1-3Folding type 4-1-3
  • Folding type 4-2-2Folding type 4-2-2
  • Folding type 5-0-5Folding type 5-0-5
  • Folding type 5-1-4Folding type 5-1-4
  • Folding type 5-2-3Folding type 5-2-3
  • Folding type 6-0-6Folding type 6-0-6
  • Folding type 6-1-5Folding type 6-1-5
  • Folding type 6-2-4Folding type 6-2-4
  • Folding type 6-3-3Folding type 6-3-3
  • Folding type 7-0-7Folding type 7-0-7
  • Folding type 7-1-6Folding type 7-1-6
  • Folding type 7-2-5Folding type 7-2-5
  • Folding type 7-3-4Folding type 7-3-4
  • Folding type 8-0-8Folding type 8-0-8
  • Folding type 8-1-7Folding type 8-1-7
  • Folding type 8-2-6Folding type 8-2-6
  • Folding type 8-3-5Folding type 8-3-5
  • Folding type 8-4-4Folding type 8-4-4

Variants