Opal Heritage




Opal Heritage is the ideal window system for heritage applications such as listed building renovations where planning regulations demand a like-for-like steel replacement window with optimum thermal performance. They are a traditional looking window and are often requested for cottage style properties.


  • Suitable for fixed window, single or double sash, side hung open out casements, top hung open out casement and tilt & turn applications.
  • Designed as a direct replacement for steel windows.
  • Will achieve U Value of 1.5 W/m2K (using sealed unit 1.0 W/m2K)
  • System can achieve a Window Energy Rating ‘B’
  • Extended chamfered polyamide thermal breaks provide excellent thermal performance.
  • Single or dual colour, marine quality polyester powder coat as standard
  • Document L compliant
  • Grey, white and grey on white are all available from stock
  • All other colours available on request
  • PAS 24:2012 - available on request


  • Side Hung Max Width 700mm
  • Side Hung Min Width 300mm
  • Side Hung Max Height 1400mm
  • Max. Vent Weight 40kg
  • Top Hung Max Width 1400mm
  • Top Hung Max Height 1300mm
  • Top Hung Min Height 275mm
  • Top Hung Max Weight 40kg
  • Glazing - 24mm, 28mm, 32mm or 36mm
  • Sightline 59mm
  • Frame Depth 47mm as standard, 70mm available

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