Sunflex is the most technically advanced sliding folding door system on the market, designed and manufactured to the highest standards it allows you to maximise the opening potential of external elevations.

This is achieved without compromising weather rating, thermal performance or security.

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Features & Benefits

  • Severe weather rating
  • High security locking system
  • Finger safe gaskets
  • Choice of thresholds including a flush option
  • A wide range of opening options
  • Full range of colours and finishes
  • Corners and radius curves possible
  • Available in timber, aluminium, or a combination of both

Installation & Guarantee

Becker offer a full nationwide installation service. All products are guaranteed against defects in materials or workmanship, for a period of 12 months.


The emphasis with this product is for thermal insulation, however with this you also achieve good acoustic performance. Depending on the type of glazing sound reduction levels range between 30 to 45 dB.

Technical Information

Designed to perfection

SunflexThe Sunflex range is recognised for setting the benchmark in both design and quality.

It is used throughout the world and meets the challenge of extreme weather conditions.

The latest building regulations on thermal efficiency are easily met and surpassed by this superb system.


  • SF25 Glass Partition Wall - giving unobstructed panoramic views, ideal for balcony type enclosures and internal partitions.
  • SF45 Non Thermal Aluminium - for internal or external applications with the strength and ability to be used for commercial purposes.
  • SF55 Thermally Broken Aluminium - combines slimline looks without compromising thermal performance. Complies with latest building regulations.
  • SF65 Laminated Timber - laminated sections for strength and stability - available in a choice of timbers.
  • SF70 Thermally Broken Aluminium - polyamide thermal break combats heat loss and condensation.
  • SF80 Timber/Aluminium - No compromise! with timber to the interior and aluminium to the exterior.
  • SF99/155 - Straight sliding panels in thermally broken aluminium for maximum glass area with minimum surround.


Aluminium systems are available in a standard range of 5 colours. Timber systems are offered in a clear finish, or a range of 'Sikkens' stains. Both timber and aluminium are also available in paint, with a choice of over 200 RAL colours.

Aluminium Finishes

Sunflex Aluminium Finish Swatches

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Timber Finishes

Sunflex Timber Finish Swatches

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RAL Classic Solid Colours (for paint)

RAL Classic Swatches

View larger swatches (external website)

Please note that colours can not be reproduced 100% accurately on computer monitors (except on specially calibrated equipment). The finished product may therefore vary slightly in colour to that shown on your screen.

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