For more than 35 years German manufacturer SUNFLEX has designed, developed and manufactured some of the most advanced folding door systems in the world. The latest addition to the range, the SF75eco continues this history of innovation and is packed full of exclusive design features and unrivalled performance standards. Download the new brochure
Keep the inside in
The SUNFLEX SF75eco offers industry leading thermal performance standards with U-values from just 0.8w/m²K. The unique frame design allows for better thermal performance with double glazing that other bifold doors can achieve with triple glazing, with the system even capable of achieving Passivhaus standards of efficiency. Learn more
Keep the outside out
When it comes to bifold doors it is not just about keeping the warmth in, it is also about keeping the weather out which is why SUNFLEX bifold doors undergo rigorous independent weather testing. Thanks to double rebated seals, not often seen on a bifold, the SF75eco can be designed to offer industry leading protection from the elements. Learn more
Complete peace of mind
Keeping your home safe is at the core of the design of SUNFLEX bifold doors. The SF75eco is designed to comply with PAS 24 testing to meet the security requirements of Building Regulations Document Q along with holding the prestigious Secured by Design™ award to meet the police preferred specification for security. Learn more
Exclusive design features
From the innovative antiSLAM panel catch that prevents the lead door from accidentally slamming shut to the clever locked part-vent feature that allows you to part-open the doors without unlocking them and from the exclusive in-line handle design to the widest range of track and panel configuration options, the SF75eco truly sets the standard for attention to detail. Learn more
Your doors, your way
From 3-panel doors all the way up to curved designs, open corners, steel-look heritage sets and even bifold windows, the SF75eco is the most advanced and customisable folding door system on the market. It can even be designed with internal wood cladding for those looking for an alternative to timber bifold doors. Learn more
Find your nearest showroom
You can use the postcode finder on the SUNFLEX UK website to find your closest product display. Working with a network of glazing specialists around the country helps to provides excellent service for those considering a self-build or renovation project. Find your nearest showroom