PURPOSE: To enable safe cabling work or conduit work with a remote operation even when a cable or a conduit is laid at a higher position such as double ceilings by eliminating the troublesome works to remove or mount the cover body. ;CONSTITUTION: At the one side surface of a duct body 10, a thin groove 11 connecting the path in the duct body 10 and external side is continuously formed in the longitudinal direction. The cable C may by introduced into the duct body 10 for cabling by means of a pull-in tool 24 having a grip 25 which may be provided through the narrow groove.;COPYRIGHT: (C)1996,JPO
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