Steel & Fire Door
Steel doors and fire doors with galvanized steel frames and panels, rockwool cores, intumescent seals, fire-rated hardware and four glass options. Single-leaf sample tested to SNI 1741-2008: integrity and insulation 120 min.
Key specifications
- Fire resistance, SNI 1741-2008 (tested sample): −/120/120 (integrity and insulation 120 min)
- Door leaf (tested sample): 2,050 (H) × 800 (W) × 55 (T) mm, 1.2 mm steel plate
- Frame (tested sample): 2,100 (H) × 900 (W) mm, 120 mm profile, 1.5 mm steel plate
- Core (tested sample): Rockwool board, 100 kg/m³
- Hardware (tested sample): 3 heavy-duty fire-rated hinges, fire-rated lock case, mortise lockset, intumescent seal
- Integrity + insulation, SNI 1741-2008 (tested sample)
- 120min
- Door leaf thickness (tested sample)
- 55mm
- Rockwool core density (tested sample)
- 100kg/m³
- Door leaf steel plate (tested sample)
- 1.2mm
Product details
A single-leaf steel fire door sample was tested by Sucofindo in Indonesia to SNI 1741-2008 and reached 120 minutes of integrity and insulation (see Test report). Ratings for other sizes and configurations, such as double-leaf or glazed doors, are confirmed per project. CUBIXY steel doors and fire doors are built from the components below. Hardware options, vision panels and louvers are available, all produced to project-specific dimensions, and an optional master key system is offered.
Components

Door Closer
Fire-rated door closer ensuring automatic closing to maintain fire compartmentation.
Door Frame
High-strength galvanized steel frame for structural stability, fire resistance, and corrosion protection.
Hinges
Heavy-duty, fire-rated steel hinges designed for high-temperature resistance and long-term durability.
Mortise Lock
Fire-rated mortise lock body ensuring reliable locking performance and structural integrity under fire conditions.
Door Panel
Double-layer galvanized steel panels with fire-resistant or powder-coated finish.
Filling Material
High-density rockwool or equivalent non-combustible core for fire insulation and sound reduction.
Fixing Plate
Steel fixing plates for secure installation and enhanced structural stability.
Sealing Strip
Intumescent fire seals that expand under heat to block flames, smoke, and hot gases.
Fire-resistant Glass
Fire-resistant glass vision panels; the fire rating of a glazed door is confirmed per project.
Specifications
| Door Type | Hinged door |
|---|---|
| Door thickness | 40–55 mm |
| Frame steel plate | 1.0–2.0 mm |
| Door leaf steel plate | 0.8–1.6 mm |
| Fire resistance, SNI 1741-2008 (tested sample) | −/120/120 (integrity and insulation 120 min) |
| Door leaf (tested sample) | 2,050 (H) × 800 (W) × 55 (T) mm, 1.2 mm steel plate |
| Frame (tested sample) | 2,100 (H) × 900 (W) mm, 120 mm profile, 1.5 mm steel plate |
| Core (tested sample) | Rockwool board, 100 kg/m³ |
| Hardware (tested sample) | 3 heavy-duty fire-rated hinges, fire-rated lock case, mortise lockset, intumescent seal |
Test report
Independent fire-resistance test of a CUBIXY door sample. A test report covers the tested sample and doors of the same type and materials; it is not a product certificate.

Fire resistance test in Indonesia
Tested in Indonesia by Sucofindo to SNI 1741-2008: a single-leaf steel fire door sample reached −/120/120, meaning integrity and insulation for 120 minutes. The result applies to doors of the same type and materials as the tested sample.
- Standard
- SNI 1741-2008 · −/120/120
- Report no.
- E38326/FNBPAT
- Laboratory
- Sucofindo, Electrical and Engineering Laboratory (KAN accredited, LP-024-IDN)
- Report date
- 2026-08-26
Tested sample
Single-leaf fire-rated steel door (code CWI-FD-2026-001). Frame 2,100 (H) × 900 (W) mm, 120 mm steel profile of 1.5 mm steel plate; door leaf 2,050 (H) × 800 (W) × 55 (T) mm, 1.2 mm steel plate with a rockwool insulation board core of 100 kg/m³; three heavy-duty fire-rated hinges, fire-rated lock case, mortise lockset and intumescent seal. Tested 22 August 2026.
Test results
| Test item | Requirement | Result |
|---|---|---|
| Integrity | No fire penetration for 120 minutes | No fire penetration; test stopped at 120 minutes |
| Insulation: average temperature, unexposed side | ≤ 168.4 °C | 89.5 °C at 120 minutes |
| Insulation: maximum temperature, unexposed side | ≤ 208.4 °C | 106.4 °C at 120 minutes |
| Furnace temperature at 120 minutes (test condition) | Follow the SNI 1741-2008 standard curve (1,049.0 °C at 120 minutes) | 1,038.8 °C, deviation −1.0 % from the curve |
Standards & certificates
Rating as stated in the CUBIXY product catalogue. The certificates are held by our partner manufacturer.
- UL 10C60 min, positive pressure
Fire door listing (Intertek Warnock Hersey)
Single steel fire doors (Model SFD60) and pairs of steel fire doors, each with its listed steel frame, are listed by Intertek under the Warnock Hersey (WH) mark for 60 minutes, positive-pressure tested to UL 10C and NFPA 252. Listed sizes: single door leaf up to 913 × 2152 mm, at least 50 mm thick (single swing only); pair of doors with leaves of 854 × 2152 × 50 mm each, with an intumescent edge seal on the frame. Frames are grouted and anchored in aerated concrete or masonry walls. The listings are held by our partner factory that manufactures the doors.
Standard: UL 10C · UL 10B · NFPA 252 · CAN/ULC S104
Certificate

- Certificate no.
- WHI25-34558402 / -405 / -403 / -401
- Issued by
- Intertek Testing Services NA, Inc. (Warnock Hersey)
- Issued
- 2025-03-31
- Valid until
- 2026-12-31
- ISO 9001
Quality management system
ISO 9001:2015 (GB/T 19001-2016) quality management system certification of our partner fire-door factory; the certified scope includes the production and sale of steel insulated fire doors. The certificate is held by our partner factory.
Certificate

- Certificate no.
- 02426Q00628R101
- Issued by
- Shenzhen Universal Certification Centre Co., Ltd. (UCC), CNAS C024-M
- Issued
- 2026-05-21
- Valid until
- 2029-05-20
Options & configuration
Door Styles: Single Leaf
Door style images from the CUBIXY catalogue (renderings).

Single leaf with louver

Single leaf with narrow vision panel

Single leaf with vision panel and door closer

Single leaf with rounded vision panel

Flush single leaf

Single leaf with push bar

Single leaf with narrow vision panel and push bar

Single leaf with vision panel, push bar and louver

Single leaf with vision panel, push bar and door closer

Single leaf with door closer

Single leaf with long-plate lever handle

Single leaf with square vision panel
Door Styles: Unequal Leaf
Door style images from the CUBIXY catalogue (renderings).
Door Styles: Double Leaf
Door style images from the CUBIXY catalogue (renderings).
Door Variation
Single, unequal and double leaves, each flush or with vision panels, louvers, or both (catalogue diagram).
Opening Variation
Four opening directions each for single and for unequal or double doors, shown between inside and outside (catalogue diagram).
Glazing Options
| Composite Fire-Rated Glass | |
|---|---|
| Wired Fire-Resistant Glass | |
| Monolithic Fire-Resistant Glass | |
| Tempered Safety Glass | For doors without a fire-resistance requirement; not a fire-rated glazing option. |
Colours
Colour swatches from the CUBIXY catalogue; more colours are available.
Standard Door Closers
Images and model numbers from the CUBIXY catalogue.
Fire Alarm Door Closers
Images and model numbers from the CUBIXY catalogue.
Plugs
Fire-resistance hours and CE / UL marks as listed for each item in the CUBIXY catalogue.
Sequencers
Fire-resistance hours and CE / UL marks as listed for each item in the CUBIXY catalogue.
Emergency Push Bars
Fire-resistance hours and CE / UL marks as listed for each item in the CUBIXY catalogue.
Fireproof Locks
Fire-resistance hours and CE / UL marks as listed for each item in the CUBIXY catalogue.
Frequently Asked Questions
- Has the steel fire door been fire tested?
- Yes. A single-leaf steel fire door sample was tested in Indonesia by Sucofindo to SNI 1741-2008 (report E38326/FNBPAT) and reached −/120/120, meaning integrity and insulation for 120 minutes. The result applies to doors of the same type and materials as the tested sample; ratings for other sizes and configurations, such as double-leaf or glazed doors, are confirmed per project.
- What are the main components of a CUBIXY steel fire door?
- A galvanized steel door frame, double-layer galvanized steel door panels, a high-density rockwool (or equivalent non-combustible) core, fire-rated steel hinges, intumescent fire seals, a fire-rated mortise lock, steel fixing plates, a fire-rated door closer and optional fire-resistant glass.
- Which glazing options are available?
- Four glass options are listed: composite fire-rated glass, wired fire-resistant glass, monolithic fire-resistant glass and tempered safety glass. Tempered safety glass is not fire-rated glazing and is used only where no fire resistance is required. The fire-tested sample had no glazing, so ratings for glazed doors are confirmed per project.
- How do the seals and closer help maintain fire compartmentation?
- The intumescent seals expand under heat to block flames, smoke and hot gases, and the fire-rated door closer closes the door automatically so the compartment stays closed.
Projects using this product

Qatar
North Field Expansion Project, Qatar
Steel doors for North Field Expansion Project, Qatar, supplied by CUBIXY's partner factory.
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Tanzania
Judicial Services Commission Project, Tanzania
Steel doors for Judicial Services Commission Project, Tanzania, supplied by CUBIXY's partner factory.
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Riyadh, Saudi Arabia
Red Palace Boutique Hotel, Riyadh
Steel doors for Red Palace Boutique Hotel, Riyadh, supplied by CUBIXY's partner factory.
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Ma On Shan, Hong Kong
Student Hostel at Whitehead, Ma On Shan, City University of Hong Kong
Steel doors for Student Hostel at Whitehead, Ma On Shan, City University of Hong Kong, supplied by CUBIXY's partner factory.
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Macau
MGM Macau Replacement Project
Steel doors for MGM Macau Replacement Project, supplied by CUBIXY's partner factory.
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Macau
Metal Door Supply for the Venetian Arena, Macau
Steel doors for the Venetian Arena, Macau, supplied by CUBIXY's partner factory.
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Macau
Galaxy Cotai Mega Resort, Hotel 3D
Steel doors for Galaxy Cotai Mega Resort, Hotel 3D, supplied by CUBIXY's partner factory.
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Hong Kong
Hong Kong Cyberport Project
Steel doors for Hong Kong Cyberport Project, supplied by CUBIXY's partner factory.
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Ask about Steel & Fire Door
Tell us the opening size (W × H), door type, application, performance requirements (fire, wind, insulation), control method, quantity and project location. We reply by email with a specification and quotation.
Contact information
Phone
WhatsApp
Office
Ruko Sorrento Grande East, Blok L-15, Paramount Gading Serpong, Tangerang, Banten 15332, Indonesia
































































