77IWE Open-Out Window




The system is available in a wide variety of configurations, delivering high levels of thermal performance through incorporating technologies such as high performance polyamides, insulated centre seals and profile foam insertions. The 77IWE system also fully integrates with our aluminium curtain walling and door systems.


Design features

  • High levels of thermal performance
  • Multi chamber polyamide thermal breaks, insulated centre seals and foam insertions provide excellent performance
  • Integrates with AluK curtain wall and door systems


  • Wide variety of configurations
  • Available in single or dual colour options, including anodised finishes
  • Range of locking options with patented AluK Groove

Application type

Ideal for residential and commercial applications incl. houses, apartments, villas, public buildings, hospitals, schools and industrial buildings.

  77IWE - Open out
U value W/m²K (Double glazing) : 1.2 W/m²K
U value W/m²K (Triple glazing) : 0.8 W/m²K
Acoustic performance (dB) : -
Air tightness (Pa) : Class 4 (600 Pa)
Water tightness (Pa) : E1050 (1050 Pa)
Wind load (Pa) : C5 (2400 Pa)
Security PAS 24 : X
Certifications : Q-mark
Secured by design : X
Tilt & turn : -
Top hung : X
Side hung : X
Bottom hung : X
Punched openings : X
Triple glazing : X
100 mm restriction : X
Size limits
Top hung (max weight) : 180 Kg
Side hung (max weight) : 55 Kg
Bottom hung (max weight) : 90 Kg
Dual color option : X
Multi-point locking : X
Locking handle : X
Glazing thickness : 50mm
Folding opener : X
Trickle ventilation : X