The NAVALIBER 4NB-15 door is specially designed for big size door necessities. At the same time is B-15 fire retarding classified. The 4NB-15 door offers the following variations and optional features:
- Window
- Concealed door closer
- Kick-out panel
- Ventilation louver
Dimensions, accessories and finishing according to project.
| Technical Features | 4NB-15 |
|---|---|
| Door frame | 1,2 mm |
| Door leaf frame | 1,5-3 mm |
| Linings | 0,8 mm |
| Finishing | 150 μm PVC film |
| Insulation | rock wool |
| Density | 150 kg/m³ |
| Max. vertical clear opening | 2150 mm |
| Max. horizontal clear opening | 1046 mm |