A duct or conduit section (10) for installation, in particular, in an air intake system of an internal combustion engine, in which the duct section is composed of two shells (14) which are joined by a snap connection (15). Openings located in the parting seam or joint (16) between the shells (14) are produced by recesses in the half shells. These openings each have a cross-sectional area of less than 7 mm2 and are useful for suppressing noise resulting from the air intake. As a result of the openings, vibration-inducing forces exerted on adjacent components in the engine compartment due to pulsations in the intake tube, can be minimized or avoided. Also, the quantity of additional air drawn in from the engine compartment, which is undesired because it is too warm, is decreased.