In the concealed sash variant of the WICLINE 75 TOP aluminium window system the glass is held directly in the thermal break zone by a special glazing bead. This gives extremely slim frame profiles which have excellent insulation values and joint-free external frame sight lines. The improved ratio of frame to glazing proportions enable Uw values to passive house standard, and increased light transmission with panoramic views.


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
Load bearing capacity of safety devices
Mechanical strength
Continuous operation
Corrosion resistance of fittings
Burglar resistance
Quality assurance
Class 4
Class C5/B5
Rw (C;Ctr) = 46 (-1;-4) dB
Class 1
Class 4
Class 3 (20 000 cycles)
Class 5
RC1N, RC2N, RC2, RC3
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 standard.
  • Patented corner and butt joint technology for high rigidity of components
  • Infill thickness up to 50 mm

Thermal insulation

  • Uf values 0.97 to 1.3 W/(m²K) for fixed glazed units with external sight lines from 48 to 155 mm
  • Uf values up to 1.2 W/(m²K) for sash-frame combina-tions 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 130 kg
    • Visible hinges: up to 130 kg
  • Sash sizes (w x h): up to 1300 mm x 2250 mm
  • Optional opening limiter

System combinations

  • WICLINE 75 TOP windows can be combined with WICLINE 75 evo windows, and using integration sash-frames, with current WICTEC curtain walling
  • Now also available with WICONA’s award-winning concealed handle in combination with profile 1010615


We can help you with your questions, fill out our quick and easy online contact form.

Contact us