Cable trunkings KOPOS can be mounted on any substrate materials of flammability class A to C3. A condition, however, must be completed that the cable led through the trunking is not joined, interrupted or clamped anywhere along the line.
Trunking boxes can be mounted directly on surfaces of flammability class A to C2. In case of installation on a material of flammability class C3, it is necessary to use a thermal-insulation pad under the box.