
SF20 Frameless Sliding System
Smooth, effortless sliding panels that glide neatly behind one another to create wide, unobstructed openings.

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Designed with architects, designers and specifiers in mind, Sunflex Technical Resources brings together all the technical information you need in one place. Access product specifications, Revit files, CAD drawings, brochures and supporting documentation to simplify the specification process from concept through to construction.

Smooth, effortless sliding panels that glide neatly behind one another to create wide, unobstructed openings.

Smooth sliding operation with timeless character — decorative glazing bars on toughened safety glass.

Each glass panel slides and turns independently before stacking neatly, for expansive, uninterrupted openings.

Slimline double-glazed panels for superior weather protection, thermal insulation and noise reduction.
| Specification | SF20 | SF25 |
|---|---|---|
| Product Type | Frameless Glass Sliding System | Frameless Glass Slide and Turn System |
| System | ![]() | ![]() |
| Load | Floor-mounted, load bearing on bottom track | Suspended, Top-hung load bearing on overhead architecture |
| Max. system width | 19,200 mm | 20,800 mm |
| Min. system width | 600 mm | 500 mm |
| Max. system height | 3,000 mm | 2,800 mm |
| Min. system height | 1,100 mm | 600 mm |
| Number of sashes | 1 to 12 | up to 13 left + 13 right |
| Floor tracks | 1 to 6 tracks slide and guide rail Follower function for sliding panel | Single track |
| Glass thicknesses | 10 mm tempered safety glass (ESG-H) | 8 mm, 10 mm and 12 mm tempered safety glass (ESG-H) |
| Track options | Flush or recessed | Flush or recessed |
| Track depth | 15 mm panel construction depth | 15 mm panel construction depth |
| Configurations | Slides to the left or right as desired | Adjustable via angles: Straight, curved and can go around corners. |
| Closing mechanism | Intelligent panel follower technology | Slide and Turn system |
| Sealing | Gap closure via aluminum profile with brush seal | Gap closure via aluminum profile with brush seal |
| Tolerance compensation | 16 mm to 20 mm | 5 mm |
| Locking Mechanism | Internal or external locking | Internal and external locking |
| Thermal Insulation | No | No |
| Powder coating | Coming soon | Coming soon |
Highlighted rows differ between the two systems.


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Have a question about a SUNFLEX system? Speak directly with our Technical Department for expert advice on specifications, installation requirements, FAR restrictions, certifications and complex design challenges. Our team is here to help you work through the details and find the right solution for your project.

SUNFLEX Germany has spent more than 40 years engineering and refining its systems.

At first glance, the SUNFLEX SF22 is all about the glass, the views and those distinctive framed lines. But the part that makes it work so well is much closer to the ground.