Excellent fire protection properties. Narrow slots suitable for small diameter wires. Smooth, burr-free edges protect installers from injury and cables from damage. Easy removal of the webs without sharp edges thanks to predetermined breaking points. Duct covers hold securely even in a vertical position and under vibration. The cover is flush with the side of the duct and enables close, connected placement of the duct. Bottom perforation in accordance with DIN EN 50085. HellermannTyton halogen-free wiring ducts are used in locations with high concentrations of people, high material values or high security requirements. These include, for example, tunnels, public transport, elevators and data centers. Note: Halogen-free PC+ABS is not resistant to all oils and greases.