Start a Project
Tell us about your project.
A few details and we’ll be in touch.
W50-TB Thermally Broken Steel Doors & Windows
Custom steel doors and windows made with original Ottostumm FerroFinestra W50-TB profiles. Classic steel proportions with an integrated thermal break for exterior applications.

Why choose W50-TB
W50-TB combines the traditional steel appearance of the FerroFinestra range with a thermally broken frame. It’s an option for residential, commercial, and renovation projects that need steel doors and windows with improved insulation.
A high-density polyurethane barrier separates the inner and outer steel sections to reduce heat transfer through the frame. The system accommodates insulating glass up to 38 mm thick.

System features

- Material
- 1.5 mm cold-formed galvanized steel
- Thermal break
- High-density polyurethane
- Glazing
- Insulating glass up to 38 mm
- Windows
- Side-hung, top-hung, bottom-hung, and pivoting
- Doors
- Hinged, sliding, and folding configurations
- Details
- Multiple glazing bead profiles and traditional or contemporary hardware
Available configurations depend on opening dimensions, glass weight, and hardware requirements.

Made to your specifications
Choose your dimensions, glass, finish, hardware, and divided-lite layout. BlackFramed coordinates specifications, shop drawings, fabrication, and delivery.
Shop drawings are prepared after the deposit and submitted for approval before production.
W40 or W50-TB?
Choose W40 for original hot-rolled steel profiles without a thermal break. Choose W50-TB when your project calls for a thermally broken frame.
We’ll help you select the system and glass configuration based on your project’s location, design, and performance requirements.
Explore W40Request a W50-TB quote
Send your plans or opening dimensions, project location, and preferred design. We’ll review the details and provide a quote.
Request a Quote