Thermally Broken Steel Windows and Doors

The W50 TB system combines the timeless elegance of classic hot-rolled steel with modern thermal-break technology. Featuring a high-density polyurethane barrier and advanced insulating glass, it meets international energy-efficiency standards with U-values as low as 1.4 W/m²K. Slim sightlines replicate the iconic W20 aesthetic while offering superior performance, light transmission, and versatile opening options.

Ottostumm W50 profiles align with SteelVision’s minimalist design philosophy, delivering slender proportions, authentic fittings, and durable spray-applied finishes. With dual weather-stripping, double glazing, and exceptional strength, these steel windows and doors provide lasting comfort, insulation, and minimal maintenance—perfect for both contemporary architecture and refined design applications.

The W50 TB system combines the timeless elegance of classic hot-rolled steel with modern thermal-break technology. Featuring a high-density polyurethane barrier and advanced insulating glass, it meets international energy-efficiency standards with U-values as low as 1.4 W/m²K. Slim sightlines replicate the iconic W20 aesthetic while offering superior performance, light transmission, and versatile opening options.

Ottostumm W50 profiles align with SteelVision’s minimalist design philosophy, delivering slender proportions, authentic fittings, and durable spray-applied finishes. With dual weather-stripping, double glazing, and exceptional strength, these steel windows and doors provide lasting comfort, insulation, and minimal maintenance—perfect for both contemporary architecture and refined design applications.

Windows

Thermally broken steel windows combine the unmistakable elegance of slim steel sightlines with modern energy‑efficient performance. Built with an insulated thermal barrier inside the frame, these windows dramatically reduce heat transfer, eliminate interior condensation, and maintain comfort in every season. The result is a window system that delivers the strength and longevity of steel while meeting today’s strict energy standards for luxury homes and contemporary commercial spaces.

Swing and Pivot Doors

Bring timeless steel craftsmanship and modern energy performance together in one elegant system. Our thermally broken swing doors feature advanced insulation technology that dramatically reduces heat transfer while preserving the slim, architectural sightlines designers love.
Precision‑engineered steel profiles, high‑density thermal barriers, and dual weather‑seals ensure year‑round comfort, exceptional durability, and smooth, reliable operation. With expansive glass options and refined proportions, these doors deliver both beauty and performance—perfect for contemporary homes and high‑end architectural projects seeking efficiency without compromise.

Sliding Doors

Experience the perfect blend of modern performance and timeless steel design. Our thermally broken sliding doors feature advanced insulation technology that keeps interiors comfortable year‑round while preserving the ultra‑slim sightlines architects love. Engineered with high‑density thermal barriers and precision‑crafted steel profiles, these doors deliver exceptional energy efficiency, smooth operation, and expansive glass panels that flood your space with natural light.

Built for strength, beauty, and long‑term durability — this is sliding door performance elevated.

BiFold Doors

Transform any space with wide‑open views and exceptional energy performance. Our thermally broken bifold doors combine slim steel profiles with advanced insulation technology, dramatically reducing heat transfer while delivering the modern, airy aesthetic designers love.
Each panel glides and folds with precision, creating seamless transitions between indoors and out. High‑density thermal barriers, durable steel construction, and expansive glass options ensure year‑round comfort, long‑lasting strength, and stunning visual impact.

Perfect for luxury homes and contemporary commercial spaces seeking maximum openness without sacrificing efficiency.