Aluminium exterior door system
MB-79N SI+
The latest technology in your home.
MB-79N SI+ is a modern single- or double-leaf aluminium entrance-door system designed to meet increased thermal and acoustic requirements. Three-gasket sealing, a warming insert and a thermally broken threshold improve comfort, while the strong aluminium construction allows a wide range of design choices.
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0.85Ud W/(m²K)*
70 mmInstallation depth
3Chambers
3EPDM gaskets
Key features
A system designed for everyday comfort
- ✓Single- or double-leaf doors
- ✓Three-point espagnolette as standard
- ✓Three two-winged hinges
- ✓Aluminium threshold with a thermal break
- ✓Ug = 1.1 W/(m²K) glazing as standard
- ✓Warming and mounting inserts
- ✓Aluminium handle
- ✓More than 200 RAL colours, textures and special effects
Door cross-section

Technical data
MB-79N SI+ specification table
| Door type | Single- or double-leaf |
|---|---|
| Number of chambers | 3 |
| Installation depth | 70 mm |
| Thermal transmittance | Ud = 0.85 W/(m²K)* |
| Sealing | 3 EPDM gaskets |
| Standard glazing | Ug = 1.1 W/(m²K) |
| Lock | Three-point espagnolette |
| Hinges | Three two-winged hinges |
| Threshold | Aluminium with a thermal break; automatic seal available as an option |
| Colour range | More than 200 RAL colours, matt, metallic, textured and wood-effect finishes |
| Equipment | Warming insert, aluminium handle and mounting insert |
* Ud = 0.85 W/(m²K) is the manufacturer-stated system value; actual performance depends on door dimensions, infill, glazing and configuration.
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