W20 Solid Steel Profiles | Zen Doors & Windows Skip to main content
Textured golden background suggesting warmth, luxury, and elegance, enhancing the theme of bespoke architectural design.

W20 Solid Steel Profiles

Elegant black steel door with a curved arch and glass panels, set in a bright interior featuring wooden ceiling and light-coloured flooring.

W20 Solid Steel Profiles for Timeless Design

Textured golden background suggesting warmth, luxury, and elegance, enhancing the theme of bespoke architectural design.

Perfect for slender internal steel-framed doors or partitions, the W20 series brings refined minimalism to modern and heritage-inspired spaces. Its slim sightlines, precision engineering, and clean geometry create a harmonious balance between light and strength, giving every project a timeless architectural character.

The W20 system is designed for smaller-scale internal installations where elegance and proportion matter most.

Enquire Now

Architectural Precision, Thermal Innovation

Textured golden background suggesting warmth, luxury, and elegance, enhancing the theme of bespoke architectural design.
  • Premium Swiss-engineered solid hot-rolled steel profiles by Ottostumm.
  • Distinctive stepped-leg profile design for refined architectural detailing.
  • Solid steel construction with material thicknesses up to 5mm.
  • Exceptionally slim profile dimensions delivering minimal sightlines and frame depth.
  • Selection of glazing bead profiles to complement different architectural styles.
  • Recommended for internal steel doors and window applications.
  • Our slimmest solid steel profile system, designed for maximum transparency and architectural elegance.
Get In Touch
Cross-section view of a W20 solid hot rolled steel frame with dual glass panes, showcasing sleek lines and a modern finish.

W20 Inside View

Cross-section of a W20 hot rolled steel frame showcasing a double-glazed glass panel, with a sleek black finish.

W20 Outside View

MAXIMUM SIZES W20 Solid Steel
DOOR / WINDOW TYPE HEIGHT (mm) WIDTH (mm)
*Fixed Window *5500 *5500
Awning Window 2400 900
Casement Window 2450 900
*Hinge Door *2450 900
Internal Cavity/Barn Sliding Door 3600 1500
Pivot Doors NA NA
External Lift & Slide Sliding Door NA NA
Bifold Door NA NA
Download Full Specifications
  • *Larger Fixed Windows will generally be separated into multiple sections and may need to be glazed on site depending on the overall size. Details will always be confirmed on our CAD shop drawings.
  • *W20 doors exceeding 2450mm in height, SWF multipoint locking systems are required for external applications, while magnetic catches will be incorporated for internal applications.
  • Awning Windows are recommended for windows smaller than 1.2 sqm
  • Single Glazed Door Weight: 20kg-30kg per sqm depending on design
  • Double Glazed Door Weight: 40-50kg per sqm depending on design
Line drawing of various profiles of W20 solid hot rolled steel, featuring detailed dimensions and distinct shapes for architectural applications.
Detailed technical drawing of W20 solid hot rolled steel, featuring precise measurements and annotations, set against a white background.
Black steel-framed glass door with an arched top, partially open, leading into a bright interior featuring light wood flooring.
Steel-framed glass hinge door in a modern interior, featuring a black frame, arched top, and surrounded by light-coloured walls and cabinetry.
Glazed steel-hinge door with frosted panels, showcasing a modern interior with a tiled floor and elegant metallic handles.
Elegant steel frame glass hinge doors in a modern interior, featuring a marble island and soft-toned furnishings, enhancing the space's design.

Ottostumm Solid Hot Rolled Swiss
Elm – VIC

Technical drawing of W20 solid hot rolled steel door design, featuring curved and rectangular frames with labelled dimensions and details.

Explore the elegant form and balanced strength of our W20 Solid Hot Rolled Steel Series. Each precision-crafted profile showcases the artistry, refinement, and enduring performance that define every W20 steel door and window.

Download Full Specifications
Arch-shaped steel door with a central vertical handle, featuring a sleek, minimalist design in a dark finish against a light background.
Bespoke arched steel door with a sleek black frame, featuring large glass panels and a modern handle, partially open.
1Lite Arch
Modern rectangular steel door with a minimalist design, featuring a dark frame and a central handle against a grey panel.
Bespoke black steel double door partially open, featuring large glass panels and simple handles, showcasing modern design.
1Lite Square
Arched black steel window with a central crossbar, featuring clear glass panes, emphasising minimalist elegance and craftsmanship.
Arched black steel door with a glass panel, featuring a sleek design and open wing, showcasing modern architectural elegance.
2Lite Arch
Black steel-framed window featuring an arched design with a central vertical bar, showcasing a minimalist aesthetic and ample glass area.
Bespoke steel door design featuring a large arch frame with a partially open door, showcasing sleek lines and a minimalist aesthetic.
3Lite Arch
A sleek black steel-framed door featuring three square glass panels arranged vertically, with two central handles.
Bespoke black steel door with three vertical glass panels, partially open, illustrating modern design and craftsmanship.
3Lite Square
Arched steel-framed window featuring a four-lite design and a central handle, with a textured grey background.
Arch-shaped black steel door with glass panels, featuring a side panel design and sleek handles, showcasing a modern aesthetic.
4Lite Arch
Bespoke black steel-framed window with four panels, featuring a central handle and a sleek, minimalist design.
Bespoke steel door design featuring a black frame with four square glass panels, illustrating a modern open layout.
4Lite Square
Arched steel door with five rectangular glass panes, framed in dark steel, featuring sleek black handles.
Arched steel door in black frame with five glass panels, one door partially open, showcasing a modern design aesthetic.
5Lite Arch
Arched steel window featuring six panes, a central vertical divider, and a sleek handle, finished in a dark, elegant colour.
Arched steel door design with a minimalist layout, featuring a black frame and glass panels, partially open to showcase the entryway.
6Lite Arch

Explore our range of custom steel door designs, built for strength, security, and everyday performance. Each design is manufactured in-house with precise detailing, durable finishes, and solid construction, delivering reliable protection without compromising style.

View All Steel Door Designs

Our W20 Solid Hot Rolled Steel Products

Textured golden background suggesting warmth, luxury, and elegance, enhancing the theme of bespoke architectural design.

Designed for enduring elegance, each profile captures the harmony of strength and subtlety — making the W20 series an exceptional choice for refined interiors, slim-framed doors, and bespoke partitions where lightness, proportion, and precision define the architectural expression.