Ty-Ductâ„¢ Narrow slot wiring duct. Smaller, higher number of fingers for more concise harnessing. Non-slip cover does not slide easily and resists vibration. Rounded edges keep hands and wires free of abrasion. V-shaped slot lead-in enables easier and faster wire installation. Restricted slot design makes sure that wires are held with or without the cover inserted. Flush cover attaches flush with sidewall for finished look. Versatile North American and DIN Standard mounting holes enable same duct for multiple applications.