Simple and quick installation by turning the screwdriver 1/4 of a turn at the mounting points. Cables are easily laid and held securely in the wiring duct. No annoying fastening anchor protrudes from under the duct floor. The HTWD-BWR wire retaining clips relieve the strain on duct webs, especially at the corners, and prevent bulging to the side. Suitable for the HTWD-PN and HTWD-PW wiring ducts for all sizes from 40 mm (height and width). No loss of installation space: fits into the duct from the side. The HTWD-BWR wire retaining clips are anchored to the mounting points of the HTWD-PN and HTWD-PW wiring ducts. Their use is particularly recommended for vertical or overhead wiring, as the cables are secured against falling out.