Define spaces. Not daylight.
Create distinct rooms while preserving openness and natural light. Every BlackFramed interior door is custom fabricated on our ultra-slim BF S20 steel profile and built to your exact opening.
Why Interior Steel
Quiet separation. Without closing off the home.
Interior steel doors divide spaces while preserving daylight, long sightlines, and architectural openness — so a room can feel its own without ever feeling shut away.
Preserves Natural Light
Slim frames let daylight travel between rooms instead of stopping at a solid wall.
Maintains Visual Connection
Glass keeps rooms in sight of one another — separation you can see straight through.
Custom Built to Your Opening
No stock sizes. Every door is fabricated to your exact dimensions and finish.
European Steel Profiles
Engineered and fabricated on original European systems — the real thing, made to last.
Gallery
Interiors. In place.
Slim steel doors and partitions, photographed where they live — dividing kitchens, framing wine rooms, and quieting home offices without ever closing off the light.
Kitchen · Glazed Divider
Dining Room · Arched Double
Commercial · Steel Partition
Hallway · Arched Single
Wine Room · Fixed + Doors
Home Office · Fixed Partition
Home Library · Double Glazed
Closet · Reeded Glass
Primary Bedroom · Fixed PartitionOpening Types
One profile. Multiple ways to open.
The BF S20 system carries across every way a door can move. Choose the operation that fits the room — each links to a dedicated configuration.
Glass Options
Choose the right level of privacy.
From perfectly clear to fully obscured, the glazing sets the mood and the privacy. Every option carries in the same slim BF S20 frame.
Hardware
Designed for everyday use.
Steel is only as good as what you touch. Choose hardware that matches the finish and the way the room is lived in.
The System
The BF S20 system.
Our slimmest interior profile. A tight 20 × 40 mm steel section holds a 34 mm sightline — enough frame to feel solid, little enough to almost disappear. European-manufactured, made to order, and finished in the RAL colour of your choosing.
Typical Sizes
Built to your opening.
There are no stock sizes. Every interior door is fabricated to your exact rough opening — the ranges below are simply where most projects land.
Heights typically run 80–120 in — taller and custom-shaped openings (arched, raked, transomed) are welcome.
FAQ
Steel interior
doors, answered.
The most common questions we hear from homeowners, designers, and architects specifying interior steel.
Steel interior doors are internal doors and partitions built from welded steel profiles holding panels of glass. Unlike solid wood or hollow-core doors, they divide space with a slim grid of metal and glazing — providing separation while letting light and sightlines travel between rooms.
For projects that value daylight, longevity, and architectural character, yes. Steel is dimensionally stable, won't warp or swell like timber, and carries a far slimmer sightline than aluminium or wood — so you get more glass and a more refined look that holds its value for decades.
Absolutely — it's one of the most popular uses. A steel-and-glass divider separates a kitchen, office, or wine room without closing it off, keeping the plan feeling open while adding acoustic and visual definition.
Steel is significantly stronger, which lets us hold a far thinner profile — the BF S20 sits at a 34 mm sightline. Aluminium frames must be bulkier to achieve the same rigidity, so they read heavier.
Yes. Reeded, fluted, frosted, acid-etched, and tinted (bronze or grey) glazing all provide varying levels of obscurity while still transmitting light. You can mix clear and privacy glass within the same door.
They meaningfully reduce sound transfer, especially with laminated or thicker glazing and full-perimeter seals. Because they're primarily glass, they aren't rated like a solid acoustic wall — but they strike an excellent balance between quiet and openness.
In most cases, yes. Interior steel doors fit into existing openings or replace an existing door, and fixed partitions can be set into a stud or masonry opening with minimal disruption.
Yes — wall-mounted sliding and bypass configurations are available with soft-close hardware, ideal where there isn't clearance for a swing.
They can. A pocket-sliding steel door disappears fully into a wall cavity when open, leaving a clean, frame-only reveal. This requires a prepared pocket in the wall.
Our BF S20 is among the slimmest interior steel systems available, with a 20 × 40 mm section and a 34 mm sightline, engineered specifically for interior use.
Start a Project
Design the way your home flows.
Tell us about your opening, preferred configuration, and design goals. We'll recommend the right layout and fabricate an interior steel door tailored to your project.