- for powdery solids such as dust, powder and fibre
- for gaseous media such as vapor and smoke
- for air conditioning and ventilation technology
- spring steel wire integrated in wall
- wall: high-grade soft PVC
- spiral: spring steel wire
- grey and transparent
- optimized flow properties
- good resistance to alkalis and acids
- good resistance to chemicals
- capable of electrostatic discharge by grounding the spiral
- compressible 3:1
- flame-retardant according to UL94-HB
- -10 °C approx. to +70 °C approx.
- short time to +80 °C approx.
- ø 25 to ø 254 mm