Built-in junction box HWD 90

fire-resistant

HWD 90 cavity wall boxes for EI30-EI120 fire-protection walls ensure certified and fire-protection compliant electrical installation. Intelligent AFS technology reacts immediately to fire and heat and automatically seals the installation opening. This guarantees the fire resistance class of the fire-protection wall and secures escape routes. Use in all fire-protection walls and fire-resistance duration up to 120 minutes ensures maximum flexibility, even when the planning is changed. At the same time, it also maintains the wall's sound insulation requirements. For EI30 - EI20 fire-protection walls Maintains the wall's sound insulation protection Also suitable for retrofitting With fire-protection cover can be used as a junction box Also for directly opposing installation