Swiss Steel Systems.
Precision-engineered steel profiles from Switzerland for luxury residential and commercial architecture — slim sightlines, thermally broken performance, and 100% steel construction built to outlive the building it opens.
Featuring Presto 60s & Unico XS
The Case for Swiss Steel
Why Swiss steel outperforms.
Steel is the only framing material that gets slimmer as the demand on it grows. These are the properties that decide the specification.
Swiss Engineering
Tolerances measured in tenths of a millimetre, and a system logic that repeats across every opening in the project.
100% Steel Construction
No aluminium hybrids. Frame, leaf, and reinforcement are steel — one material, one expansion behaviour, one recycling stream.
Ultra Slim Sightlines
Steel's stiffness carries the load on a narrower face than any aluminium equivalent — more glass, less frame, every time.
Built for Generations
Steel doesn't creep, sag, or fatigue at the corner. A hundred-year-old steel window is still a steel window.
Low Carbon Steel
Available in reduced-emission steel with a published Environmental Product Declaration for your project's carbon accounting.
Thermal Performance
A continuous insulating zone separates inside from outside — exterior-grade U-values without a bulkier frame.
Large Glass Openings
Heavier units, taller leaves, wider spans — carried by the frame rather than compensated for with added depth.
Heritage & Contemporary
Curved and arched profiles for restoration work; razor-flat sections for modern envelopes. Same system, either language.
The Choice
Two Swiss systems. Two different priorities.
Most projects resolve to one question: is this opening about the line, or about the envelope?
For projects prioritising timeless steel aesthetics, durability, and architectural simplicity — the purest expression of the steel line.
- Interior steel doors
- Commercial interiors
- Heritage renovations
- Loft & warehouse spaces
For projects requiring exceptional thermal performance without compromising slim sightlines — the exterior envelope, uncompromised.
- Luxury homes
- Exterior doors & windows
- Passive-House-inspired design
- High-performance envelopes
Side by Side
Which Forster system fits your project?
Read the row that matters most to your project. Where both systems qualify, the decision usually comes down to whether the opening is inside the thermal line or on it.
| Criterion | Presto 60s | Unico XS |
|---|---|---|
| Interior applications | ✓ | ○ |
| Exterior applications | ○ | ✓ |
| Thermally broken | — | ✓ |
| Energy efficiency | Non-insulated | High — insulated steel |
| Maximum glass area | Large | Extra large — triple glazing |
| Windows | ○ | ✓ |
| Doors | ✓ | ✓ |
| Fire rated | ✓ | ○ |
| Curved profiles | ✓ | ✓ |
| Low carbon steel | ○ | ✓ |
| Historic restoration | ✓ | ✓ |
| Luxury residential | ○ | ✓ |
| Best suited for | Interior doors & screens | Exterior envelopes |
Fire, acoustic, and security ratings are confirmed per configuration at shop-drawing stage.
System One
Presto 60s.
The Story
Key Features
- 01.
60mm non-insulated steel system — interiors and protected openings
- 02.
Slim face width with a minimal glazing bead
- 03.
Curved, arched and raked leaves from the same section
Where It Belongs
Recommended applications.
Both systems are specified across residential and commercial work in North America.
Residential
- Luxury homes
- Modern villas
- Mountain homes
- Passive homes
- Coastal homes
- Historic renovations
Commercial
- Boutique hotels
- Restaurants
- Corporate offices
- Retail
- Mixed-use
- Hospitality & clubs
The Difference
Why buy Swiss steel through BlackFramed.
The profile is Swiss. Everything between a European system and a finished North American opening is ours.
North American Project Support
One team on your timezone, from first sketch through punch list.
Shop Drawings Before Fabrication
Every opening drawn, reviewed, and approved before a section is cut.
Custom Sizing
Built to the opening you have — not the nearest standard size.
Powder Coat Finishes
Any RAL, in matte, satin, or textured, applied to the full assembly.
Hardware Selection
Levers, pulls, pivots, and closers matched to the system and the finish.
Glass Specification Guidance
Thermal, acoustic, safety, and privacy make-ups specified per elevation.
White-Glove Project Management
Production, logistics, customs, and site coordination handled end to end.
Delivered Ready to Install
Glazed, finished, hardware-fitted, and crated by opening for the trades.
viii. Specification
Specify Swiss steel.
Send a project brief and we will come back with a system recommendation, sightline and thermal data, CAD details, finish and hardware options, and indicative pricing.
