Fire-rated aluminium door system
MB-78EI Fire-Doors
Certified protection against fire and smoke.
MB-78EI is a specialised fire-rated aluminium door system designed to separate fire compartments in buildings. Its technically advanced construction provides integrity and thermal insulation during a fire and achieves EI30–EI60 fire resistance. Stable aluminium profiles with specially profiled thermal breaks, fire-rated glazing, and intumescent and ceramic seals help restrict the spread of fire and smoke.
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Key features
A system designed for everyday comfort
- ✓EI30–EI60 fire resistance
- ✓Integrity and thermal insulation during fire
- ✓Fire-rated glazing
- ✓Fittings meeting fire-safety requirements
- ✓Special intumescent and ceramic seals
- ✓78 mm thermally insulated aluminium profiles
- ✓Optional anti-panic fittings
- ✓More than 200 RAL colours, special colours and textures
Door cross-section

Technical data
MB-78EI Fire-Doors specification table
| Purpose | Fire-rated aluminium doors for separating fire compartments in buildings |
|---|---|
| Fire resistance | EI30–EI60 |
| Number of chambers | 3 |
| Installation depth | 78 mm |
| Thermal transmittance | Ud = 1.6 W/(m²K) |
| Sealing | Two EPDM gaskets plus special intumescent and ceramic fire seals |
| Glazing infill thickness | 20–45 mm and 47–49 mm |
| Glazing | Fire-rated glass with a choice of glass types |
| Fittings | Compliant with fire-safety requirements; anti-panic fittings available |
| Colours | Wide range of RAL colours, special colours and textures |
The EI classification means that the door assembly maintains integrity (E) and thermal insulation (I) for the specified period. The exact EI30 or EI60 rating depends on the certified door configuration, dimensions, glazing, fittings and installation method.
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