Studio Steel · Ottostumm FerroFinestra W20
W20 is the slimmest profile in the FerroFinestra range.
W20 Frame and Profile Data
Maximum unit sizing and threshold dimensions are available on request from the PINKYS Studio Steel team.
| Steel Type | Profile Thickness | Glazing Capacity | Thermal Break | Applications | Lead Time | Maximum Unit Sizing |
|---|---|---|---|---|---|---|
| Hot-rolled solid steel | 3-5 mm | Up to 21 mm unit thickness | None | Interior and Exterior | 12 - 15 weeks from approved shop drawings | Contact the PINKYS Studio Steel team |
Glazing Options Within the 21 mm Capacity
W20 accepts single glazing and dual-pane insulating glass units up to 21 mm total thickness. Triple-pane and laminated glazing are not available in the W20; the deeper jambs of the W40, W50 TB, or W75 TB accommodate those. Glazing selection within the W20 capacity is determined by the project acoustic, thermal, and safety requirements. PINKYS specifies SB70 Low-E coatings where applicable.
| Glazing Type | Notes |
|---|---|
| Tempered single glazing | Single-pane toughened glass. Appropriate for interior partitions and glazed walls. Standard safety rating for impact resistance. |
| Insulating glass unit (IGU) | Double-pane sealed unit up to 21 mm total thickness. Improved thermal and acoustic performance over single glazing within the W20 capacity. Confirm the specific IGU configuration with the Studio Steel team. |
W20 Applications
Windows
Hinged window. Side-hung, opening inward or outward.Horizontal pivot window. Pivots on a horizontal axis.Vertical pivot window. Pivots on a vertical axis.
Doors
Hinged door. Side-hung, opening inward or outward.Pivot door. Centre or offset pivot.Sliding door. Single or multi-panel sliding.Folding door. Multi-panel folding configuration.
Aesthetic and hot-rolled character
W20 is specified for its material character as much as its dimensions. The profile is a continuous section of solid steel with no thermal break, produced by the same hot-rolling technique introduced at the end of the 19th century. The process leaves a distinctive surface texture, a subtle irregularity that reads as material history rather than a defect. It is why W20 is often specified for historic restorations and landmark buildings, where a hot-rolled profile matches original steel windows in a way a thermally broken system cannot, and why it suits new construction seeking the same sense of age and permanence.
Minimal-profile partitions and glazed walls.
W20 is the preferred system for interior steel glazing when the slimmest possible frame profile is the design priority. Engineered to preserve clean sightlines, W20 partitions maintain their geometry without introducing unnecessary visual weight. A uniform profile at every junction creates a continuous shadow line that emphasizes the transparency of the glass. Available with both horizontal and vertical pivot configurations, the system enables elegant glazed openings without the visual presence of conventional hinges.
Hinged windows and doors with the character of hot-rolled steel.
W20 extends the language of interior glazing to the building envelope, allowing the same refined profile to be carried seamlessly from interior partitions to exterior openings. Defined by the distinctive character of hot-rolled steel, the system is well suited for projects where material authenticity and profile continuity are central to the design intent. As a non-thermally broken system, W20 should be evaluated against applicable energy code requirements for conditioned spaces. Where thermal performance or code compliance is required, W50 TB provides a thermally broken alternative while maintaining a consistent design language.
CAD drawings, hardware confirmation, finish specifications.
The PINKYS Studio Steel team works through the W20 specification one on one: opening sizes, glazing configuration, hardware, and finish. PINKYS produces architecturally detailed CAD drawings for every opening.
Frequently Asked Questions
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