Casement window

WICLINE 75 TOP is a highly thermally insulating window system with optimal performance, reliable fabrication and performance figures at passive house levels – combined with the familiar slimline appearance of a 75 mm window system. This window system features a slim module depth of 75mm which is combined with Uw values below 0.80 W/(m2K).


Sleek attractive design or first-class energy efficiency? With WICLINE 75 TOP, you no longer have to choose as WICONA have combined both aspects into a single outstanding aluminium window system. This allows facade designs that meet demanding energy and architectural performance requirements. WICLINE 75 TOP is a high thermal insulation aluminium window system with optimum performances, dependable workmanship and performances to passive house standards - all combined with the sleek look that is associated with a 75mm window.


System tests / CE-marked product passport according to EN 14351-1:2006+A2:2016

Air permeability
Water tightness
Resistance to wind load
Acoustic Performance
Operating forces
Mechanical strength
Continuous operation
Corrosion resistance of fittings
Burglar resistance
Bullet resistance
Quality assurance
Class 4
Class C5/B5
Rw (C;Ctr) = 47 (-1;-4) dB
Class 1
Class 4
Class 3 (20 000 cycles)
Class 5
RC1N, RC2N, RC2, RC3
FB4 S, FB4 NS (depending on profile combinations)
Certified to DIN EN ISO 9001:2008

Technical performance

Profile technology

  • Highly thermally insulated multi-chamber system with ETC Intelligence® thermal break zone, which implements window designs with only 75 mm frame depth to passive house standards.
  • Patented corner and butt joint technology for high rigidity of components
  • Infill thickness up to 65 mm

Thermal insulation

  • Uf values 0.79 to 1.3 W/(m²K) for fixed glazed units with external sight lines from 48 to 155 mm
  • Uf values 1.0 to 1.2 W/(m²K) for sash-frame combinations with external sight lines from 74 to 142 mm
  • Uw values less than 0.80 W/(m²K)

Gasket concept

  • Central gasket in three variants:
    • Circumferential installation without corner pieces
    • With formed corners, no adhesive required
    • Corner vulcanised frames


  • Concealed hardware
    • Visible hinges, coated or anodised in all colours
    • Concealed hinges with integrated end position damping, opening angle max. 105°
  • Sash weights:
    • Concealed hinges: up to 160 kg
    • Visible hinges: up to 200 kg
    • On request: up to 300 kg
  • Sash sizes (w x h): up to 1700 mm x 2500 mm, Skylights up to 2500 mm x 1700 mm
  • Optional opening limiter

Additional designs

  • Concealed sash, infill thicknesses up to 50 mm
  • Integration frame for mullion/transom curtain walling
  • Skylight with manual lever, crank handle or motor

System combinations

  • WICLINE 75 TOP windows can be combined with WICLINE 75 evo windows, WICSTYLE 75 evo doors and using integration sash-frames, with current WICTEC curtain walling

System Overview WICLINE 75 TOP

  • Highly thermally insulated multi-chamber window system with ETC Intelligence® thermal break zone
  • Patented corner and butt joint technology for high rigidity of frames and sashes
  • Infill thickness up to 65mm

ETC Intelligence® thermal break zone

Due to the patentedETC Intelligence® thermal break zone, window applications can achieve Passive House standard with a frame depth of just 75mm. Conventional insulation inserts are no longer required to achieve this performance level for most applications. The outstanding energy efficiency is achieved by an innovative and intelligent mix of materials in the thermal break zone of the window system. 


ETC Intelligence® - a unique innovation

  • Low emission film reflects radiated heat
  • Low transmission thermal break material reduces heat conduction in the section
  • Low convection thermal break fins minimise heat losses through convection


With this technology, the outstanding thermal performances that used to be the reserve of the system with 90mm and above module depth is now possible for 75mm window systems too.