Excellent fire protection properties according to UL94 and EN 45545-2. Particularly narrow webs and slots for smaller cable diameters. Smooth, burr-free edges protect users and cables. Burr-free removal of webs and wall segments thanks to predetermined breaking points. Secure fit of the cover even under difficult conditions such as vertical installation and vibration. Covers flush on the sides for optimal use of space. Base perforation according to DIN EN 50085. HelaDuct HTWD-HF wiring ducts are used in control cabinets and switchgear where high demands are placed on personal or material safety - for example in the event of a fire, to guide and protect cables. These include, for example, public transport, tunnels, data processing centers or public buildings.