Without the need for costly encasing, our HWD B15 fire protection boxes provide the necessary protection for installation in shipbuilding walls with protection class B15. Cavity wall boxes of the HWD B15 series for category B15 partitions react in the shortest possible time in the event of a fire. The integrated fire-retardant coating generates foam and reliably seals the installation opening. The HWD B15 cavity wall boxes protect against fire and smoke in the fire-protection zone and preserve the B15 function of the fire-protection wall for at least 30 minutes of flames.
