Forster · thermally broken steel

Forster Unico XS

A thermally insulated steel window system with a minimal design and exceptionally slim profiles. The look suits lofts, the refurbishment of historic buildings and contemporary offices.

The stainless-steel thermal break lowers the building’s energy demand, and the construction of the system delivers good acoustic insulation. The slim sightlines let in more glass and keep the character of steel architecture.

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Technical characteristics

Reference figures for the system, measured in the laboratory and confirmed in our own production.

0,98Uw at Ug = 0.5 (Ultimate spacer)

70profundidade (mm)

60max. glazing (mm)

3juntas

3chambers

* Uw quoted for the 1200 × 1480 mm reference window. The exact Uw for your opening depends on the dimensions, the opening type and the glazing chosen.

Profile section

Galvanised steel profiles with a stainless-steel thermal break and minimal visible sections.

70 mm construction depth
Glazing up to 60 mm in the window sashes
Stainless-steel thermal break
Galvanised steel profiles
Powder coating in any RAL colour
Available in the HI variant

Technical sections

Five junctions of the system to scale: slim frame, sashes and mullions. Click to enlarge.

Slim window frame section — **Slim window frame**Base section of the slim frame, the system’s main illustration. 23 mm frame, 70 mm depth.

Frame with sash, section — **Frame with sash**The typical opening-window junction, showing how the slim frame meets the sash. 28 mm frame, 55 mm sash.

Wide frame with sash, section — **Wide frame with sash**A wider-frame variant for a different installation scenario. 48 mm frame, 55 mm sash.

43 mm fixed mullion section — **Fixed mullion 43 mm**A fixed central mullion to divide the structure into sections. 55 mm sash.

50 mm moving mullion section — **Moving mullion 50 mm**The casement junction, with no fixed mullion in the clear opening. 55 mm sash.

Thermal performance

Uw de 0,98 W/m²K on the 1200 × 1480 mm reference window, with a stainless-steel thermal break, 3 sealing gaskets and 3 chambers.

Applications

Lofts, refurbishment of historic buildings, contemporary offices and projects that call for steel joinery with slim sightlines.

Finishes

Powder coating in any RAL colour sobre aço galvanizado. As amostras de cor podem ser vistas no showroom.

Frequently asked questions

Quick answers to the most common questions about Forster Unico XS.

What is the thermal performance of Forster Unico XS?

With the glazing stated in the datasheet, Forster Unico XS reaches a Uw of 0.98 W/m²K. Better-performing glazing improves the figure; we state the exact Uw for your opening in the quote.

What are the maximum dimensions?

Maximum dimensions depend on the opening type and the weight of the glazing chosen; our team confirms them at the survey stage.

Which colours are available?

Powder coating in any RAL colour

What is the lead time and the warranty?

Manufacturing typically takes 6 to 8 weeks after the survey and order. Installation is carried out by our own team and the system carries a 10-year warranty.

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