A0-6 Assembly 1 min 17 s
EI fire damper workshop
Details
Question answered: How are Starduct EI fire dampers made, and in what volume?
EI 120 Measured (test report)
S-MFSD-MB
Multi-blade fire damper EI120
Parallel multi-blade damper installed in the wall between two fire compartments, closing by spring return on power loss or fire alarm
Technical description
| Model code | S-MFSD-MB |
|---|---|
| Type | MFD · actuator |
| Fire class | EI 120 (measured EI 123) |
| Production sizes | W 150–800 × H 150–1200 mm |
| Release | BFN24-SR |
| Casing length | L = 210 mm |
| Flange | (W + 65) × (H + 65) mm · TDC |
| Order code | S-MFSD-MB-800x1200-TDC-EI120 |
Source: Measured (test report) · EI and leakage during the fire test: measured values from the test report. Free area ratio, ΔP, airflow and closed-damper leakage by size: calculated by the engine, outside the scope of the fire-resistance certification.
Testing
| Test report | 0838-2025/TNCL-TT1 |
|---|---|
| Laboratory | VLAT-2.0552 – Centre for Applied Research of Fire Science & Technology, University of Fire Prevention and Fighting |
| Date | 2025-12-12 |
| Standard | ISO 21925-1:2018 + TCVN 9311-1:2024 |
| Specimen | 800 × 1200 mm |
| Measured | EI 123 min · leakage during the fire test (test report §6.3) |
| Material test | MgSO₄ board 10 mm (casing and blades): Mould resistance, ASTM D3273-21 — 28 days, 32.5 °C, 95 % RH Exposed (smooth) face rating 10; inner (mesh) face, pressed against the steel, rating 9 Vietnam Institute for Building Materials (VIBM) – VILAS 003 · 5391/VLXD-TTMT&CKXD · 22/10/2026 Test outside the laboratory’s VILAS accreditation scope |
Documents
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Production & QC
Process-stage videos
P8 Third-party testing 2 min 17 s
Two-sided fire test of an insulated fire damper to EN 1366-2
Details
Question answered: Were tests really done, where, and for which models?
Production & QC documents (ITP, procedures, sample records)
Document list being updated.
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