The T1-E wiring ducts correspond to type T1 in terms of quality and technical equipment. The narrower webs and narrower slots of the T1-E duct are ideal for laying smaller diameter cables and wires. The T1-EF wiring channels have an additional retaining lug to prevent the wiring from slipping. With this channel, too, the patented mounting points and bottom perforation according to DIN 43659 guarantee problem-free processing. Additional wiring duct covers (COV) are available upon request.