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 folding system door 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 leaves.

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.

Downloads

CAD FILES

The Architect Catalogue (PDF) contains information and filenames of the individual CAD files. Please consult this document to find the required CAD files for every section.

Technical information

Properties

Max. height vent118 1/8 in. 
Max. width vent47 1/4 in. 
Overall system depth frame3 1/16 in. 
Overall system depth vent3 1/16 in. 
Rebate height1 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 - Double0.27 Btu/hr∙ft²∙°F
Thermal insulation Uw - Triple0.35 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