Flamatt enclosure manufacturer holding seven live VKF recognitions, all in Untergruppe 704 Brandschutzgehäuse. That family has 33 approvals in the entire register and Swibox holds a fifth of them, for enclosures that either protect equipment from a fire outside or contain the fire load of the equipment inside — the second case being what a fire-rated enclosure for a battery or an inverter is for.