Fully chamfered with a clean modern look

This window and door system is fully chamfered, with a clean, modern look particularly suitable for commercial applications. Fully BBA accredited and Kitemarked, this chamfered 70mm window system has been designed and manufactured to exceptional standards.

With a contemporary chamfer to profile edges that is consistent across window and door sections, this window has a clean, uncluttered aesthetic that is suitable for both domestic and commercial applications.

Our chamfered window system includes a wide range of both chamfered and sculptured beads, including easy to fit 'J' bead options, features multichambered profiles along with plastic thermal reinforcements and a triple glazing bead.

Features and benefits

  • 70mm front-to-back dimension
  • 3 outer frame sizes, including a multi-chambered option for cost-effective energy efficiency
  • Range of 5 plastic thermal reinforcements for improved thermal performance
  • Low sightline gasket option for increased visible glass area
  • Combined bubble and flipper gasket for enhanced weather protection
  • Range of heavy duty couplings and expansion mullions for structural glazing
  • Sash horn and Georgian bar decorative options
  • High gloss finish - easy clean surface
  • Choice of 3 single leg j beads for quick and simple glazing, including a 40mm triple glazing bead


Crystal offers a range of colour options and all of these choices are available in dual colour specification, eg Chartwell Green on outside faces and White on inside faces. All colours shown below are a guide. Before making your final decision please ensure you have seen a foil swatch.




cham 3




cham 2


Crystal Direct windows boast
huge benefits

  • Warranty

    Crystal lantern roofs come with a 10 year manufacturer's warranty

  • Energy efficiency

    Up to 65% more thermally efficient than conventional aluminium roof systems

  • Quality

    Manufactured to the highest quality standards, fully accredited and CE Marked

  • Recycling

    End of life PVC-U products are given a new lease of life via recycling

Crystal directAccreditations

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