The Foundry
Contemporary homes · Apartments and lofts · Offices and studios · Hotels and restaurants · Architectural partitions and room dividers
Key details
- 20mm visible steel frame · hand-welded construction
- Door leaves supported up to 100kg
- Maximum door height 3000mm
- Silent magnetic lock and premium hardware as standard
- Flush threshold options for seamless floor integration
- Soft-closing door closers available
- 6mm toughened safety glass (ESG) as standard
- Clear, fluted, satin, frosted and decorative glass options
- Custom 20mm glazing bar layouts
- Any RAL colour · matt, satin or textured finish
- High-quality steel with nearly 100% recycled content
Available as
Hinged single · Hinged double · Pivot · Sliding · Pocket sliding · Bifold · Parliament hinged · Fixed screens · Wall partitions
Twenty millimetres standing between ordinary and remarkable
Some profiles announce themselves. The Foundry doesn’t need to.
A 20mm visible frame is slim enough to read as architectural detail rather than structural interruption — present without dominating, precise without being cold. Every door and partition in The Foundry collection is hand-welded to achieve a finish that machine production simply can’t replicate: cleaner joints, tighter tolerances, and a quality you notice when you run your hand along the frame.
The B20 Original supports door leaves up to 100kg and reaches heights of 3000mm, which means it handles grand architectural gestures as comfortably as it does a single internal door in a London apartment. Silent magnetic locking, flush threshold options and soft-closing hardware are all available — details that matter most when a door is used every day, for years.
Every system is made to order, individually crafted for your space and no one else’s.
Internal door collections
Three families.
Every door type.
Internal – original profile
The Foundry
B20 Original · Internal steel doors & partitions
Twenty millimetres of steel frame. Everything else is glass, light and space. The Foundry is our original slim internal profile — hand-welded, precisely crafted, and designed to let a room breathe.
Internal – ultra-slim
The Atelier
W10 Ultra Slim · Internal steel doors & partitions
Ultra-slim sightlines from 13mm. A profile inspired by Art Deco precision and classic industrial glazing — made for interiors where the frame should almost disappear.
Internal – maximum light
The Lumière
W10 Ultra Slim · Internal steel doors & partitions
The look of premium fire-rated steel glazing — without the fire-rated price. The Lumière delivers the same refined heritage appearance as the Lumière Sentinel E30, at approximately 35% less. For projects where consistency matters as much as budget.
Internal – maximum light
The Heritage
W20 · Internal steel doors, partitions & shower enclosures
The character of 1920s steel glazing, faithfully recreated for interiors. Designed to match the Heritage W40 external system — for projects where authenticity matters as much as architecture.
Internal – maximum light
The Signature
B40 · Internal steel doors & partitions · New
A premium slim steel profile designed to move seamlessly from outside to in. The internal counterpart to the Signature External — same sightlines, same character, complete architectural continuity.
Describe your space. We'll take it from there.
Get your quote — no pressure, just expert advice.
EXTERNAL DOORS & WINDOWS
The Threshold collection.
Outside, redefined.
External
The Heritage
W40 · Ottostumm · External steel windows & doors
Hot-rolled steel with the strength and character that cold-formed profiles can’t replicate. The Heritage is built for the projects where authentic industrial architecture isn’t an aesthetic choice — it’s the only acceptable answer.
External
The Signature
B40 · Thermally enhanced steel entrance doors · Coming soon
The same refined proportions as the Signature Internal — engineered for the outside. Thermally enhanced, weather-tested and designed to perform as well as it looks at the entrance to a building.
External
The Forge
TB40 · Thermally broken external steel windows & doors
The look of premium fire-rated steel glazing — without the fire-rated price. The Lumière delivers the same refined heritage appearance as the Lumière Sentinel E30, at approximately 35% less. For projects where consistency matters as much as budget.
External
TB Pro
TB PRO · Thermally broken steel doors & windows · Internal & external
Thermally broken steel at a more accessible price point. The Forge Pro brings reliable insulation, smooth operation and the quiet integrity of steel to projects where performance matters but budget is part of the conversation.
External
The Technic
RP-Technic · Thermally broken external steel windows & doors
A premium slim steel profile designed to move seamlessly from outside to in. The internal counterpart to the Signature External — same sightlines, same character, complete architectural continuity.
External
The Artesa
ART. 2.0 · Thermally broken external steel windows & doors
PAS 24 certified security. Acoustic performance to 45dB. U-values to 1.2 W/m²K. Ultra-slim sightlines. The Artesa is the system for projects where every performance metric matters — and so does how it looks.
