Bifold Doors
Schüco AS FD 75/90.HI Bifold Doors
About Schüco AS FD 75/90.HI Bifold Doors
The Schüco AS FD 75/90.HI is a German-engineered folding door system in two variants, AS FD 75 and AS FD 90.HI, designed for residential and commercial use. It has slim sightlines, flush-fitted frames and a high glass-to-frame ratio, so the set reads as a wall of glass when closed. There are three threshold options, down to an ultra-low 4mm profile for near-level access, and the system is tested to PAS 24 with burglar resistance to RC 2. We fabricate and install it to the exact opening across London and the South East, or supply it to the trade.
We make three Schüco bifold systems as a Schüco Residential Partner, and this is the one to start with for a rear extension or garden opening: panels up to 1500mm wide and 3500mm high, a U-value of 1.0 W/m²K, and the choice of a 71mm weathered threshold where the doors face the weather or a 15mm or 4mm threshold for near-level access to the patio. The Schüco ASS 70 FD is the alternative where the leaves need to slide to both sides of the opening, and Schüco cornerless bifold doors open a corner of the building with no post. A side-hung daily access door lets one leaf be used as an everyday door without folding the set.
How much do bifold doors cost? Our bifold door price guide sets out supplied-and-fitted guide prices for every panel count, from 2 to 7 panels.
Last reviewed 2 November 2026
Want a price for your opening?
Every set is made to measure, so the only way to a real number is your sizes. Free survey and quotation, no obligation.
Key features
- German-engineered Schüco folding system
- Thermal performance — U-value of 1.0 W/m²K
- Available as AS FD 75 and AS FD 90.HI variants
- Tested to PAS 24 for domestic and commercial security
- Quiet operation with high-quality stainless steel components
- Flush-fitted design
- Option for a side-hung daily access door
- Three threshold options: 71mm, 15mm and ultra-low 4mm
- Burglar resistance class RC 2 with magnetic retaining catch
- Class 9A watertightness and Class B3 wind load resistance
Specifications
Frequently asked questions
Common questions about Schüco AS FD 75/90.HI Bifold Doors.
What threshold options does the Schüco AS FD 75/90.HI have?
Three: 71mm, 15mm and an ultra-low 4mm. The 71mm threshold gives the most weather protection; the 15mm and 4mm options give near-level access to the patio.
How big can Schüco AS FD 75/90.HI panels be?
Up to 1500mm wide and 3500mm high per panel.
How secure is the Schüco AS FD 75/90.HI?
It is tested to PAS 24 and has burglar resistance to RC 2, with a magnetic retaining catch.
How weathertight is it?
It is rated Class 9A for watertightness and Class B3 for wind load resistance, with a U-value of 1.0 W/m²K.
Can I have a normal door in a Schüco bifold?
Yes. A side-hung daily access door lets one leaf open on its own without folding the whole set.
Do you supply Schüco bifold doors supply only?
Yes. As a Schüco Residential Partner we fabricate the AS FD 75/90.HI to your sizes for your own installer, or supply and fit it across London and the South East.
Interested in Schüco AS FD 75/90.HI Bifold Doors?
Get a free, no-obligation quote tailored to your project.
Guides
References
