The CAS plastic smoke evacuation system consists of fixed pipes, fittings with 45°, 87° branches and PPH accessories. The system is offered as a single layer system in diameters from 60 mm to 315 mm and as a concentric system with a white coated stainless steel jacket in diameters from 110/160 mm to 200/300 mm. It is particularly suitable for cascades in indoor environments.