Optimise your living space with slim framed aluminium bi-fold doors. Whilst you may increase the amount of visible profile with this door type its made up for through the summer months when you can open your living space making a harmonious connection to your surrounding areas. Multiple threshold details and opening configurations including open corner option make this a very versatile system.

SF75 Bi-Fold Doors

Combine the comfort and security of the indoors with the tranquillity and freedom of the outdoors. Featuring large glass panels with slender sightlines, SUNFLEX aluminium folding doors are the perfect accompaniment to a picturesque garden or rural landscape.

Designed to be the most thermally-efficient bifold door, the SF75 offers Passivhaus standard thermal performance and is specifically manufactured to accommodate a triple glazed sealed unit, and thanks to its advanced thermal break technology it can achieve an incredibly low U-value from just 0.8W/m²K (based on a centre-pane of 0.5W/m²K) whilst maintaining the same usability and slender appearance of the SF55s.

With contemporary square edge profile and sightlines of just 115mm the SF75 does not just perform perfect, it looks great as well. The slim frame allows larger glass units to be used, maximising the amount of light that enters your home and enhancing the views out. Complete with an impressive multi-chambered 44mm thermal break, the frame measures just 75mm from front to back minimising the stacking area when opened.

Open Corner

The SF75 is perfect for almost any type of extension, renovation or self-build project with each individual panel measuring up to 1.2m wide and up to 3.Sm high for narrower panels. The system can open inwards or out, be utilised as a single door or French door and from 2-panel to 22-panel width as a bifold door. It can even incorporate a moveable corner post to create an eye-catching completely open corner.

Choose from two track options

The SF75 is available with the choice of two track options, low-threshold track or weathered track – providing an ideal solution for any location and requirement. For more sheltered locations the low-threshold track has an upstand of just 14mm and offers DOA compliance whilst the double rebated weathered track offers the ultimate in protection from the elements.

Standard Colour Options

Our standard colour range is White Aluminium, Grey Aluminium, Anthricite Grey, Traffic White and Anodised Silver. We also offer 213 RAL colour variations as we know that our standard range is not for everyone. We can offer an express turn around on multiple colour ranges. Call us on 0300 3035 405 or send us a message to find out more.

White Aluminium (RAL 9006) semi-gloss finish

Grey Aluminium (RAL 9007) semi-gloss finish

Anthricite Grey (RAL 7016) semi-gloss finish

Traffic White (RAL 9006) semi-gloss finish

Anodised Silver