240 minutes fire rated Building Services Enclosure - PROMATECT®-H
- Assembling a building services enclosure with a layer of PROMATECT®-H board, 20mm thick, to form an encasement by securing the board to the steel angle at corner joints and to the channel collar frame at the board joints using screws. Infill the encasement with mineral wool insulation. Cover strips over the butt-joints.