SUNFLEX Folding Doors

At Folding Future we have supplied and installed SUNFLEX folding or bifold doors for nearly 20 years. The reason we continue to fit these doors is simple, we believe they are the most advanced, highest quality and best performing doors on the market.

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Our Range of Folding Doors

SUNFLEX offer three choices of aluminium bifold doors, the SF55i, SF55s and SF75.

Packed full of German innovations such as exclusive anti-slam technology, a weathertight flush track and BSI Kitemark assured quality, the SUNFLEX bifold doors also benefit from outstanding security (including PAS 24 and Secured by Design accreditation) and a wide range of finishes to ensure the doors are perfect, whatever your project.

115mm sightlines and slender 55mm frame

SUNFLEX SF55i

The SF55i combines narrow 115mm sightlines and slender 55mm frame depths and is perfectly suited for standard configurations

Same thin frame and more

SUNFLEX SF55s

The SF55s utilises the same frames but can be manufactured to incorporate more complex designs including creating open-corners and curved sets.

One of the most thermally efficient folding doors on the market

SUNFLEX SF75

The SF75 is one of the most thermally efficient folding door systems on the market and perfect for those seeking an eco-build. The triple glazed system combines advanced thermal break technology with industry leading protection from wind and rain.

SF55i

SF55s

SF75

Frame depths‍

55mm

75mm

U-Value Double Glazed

From 1.6 W/m²k

From 1.2 W/m²k

U-Value Triple Glazed

From 1.3 W/m²k

From 0.9 W/m²k

Maximum panel width

1200mm

Maximum panel height

3000mm

3500mm

3000mm

Sightlines

117mm

115mm

BSI Kitemark™

Yes. Certificate No. 643635

Secured by Design™ award

Yes

Water tightness

To 300Pa (Class 7a)

To 900Pa (Class 9a)

Air permeability

To 600Pa (Class 3)

Anti-Slam technology

Yes

Track options

2 – weathered-flush or full weathered track

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