Abstract: A readily adjustable and replaceable skirtboard is provided for a conveyor belt mechanism of the type comprising a movable conveyor belt and a cover housing above the belt which extends along the length of the belt. The skirtboard is pinched against the outside of the cover housing by a clamping bar which extends along the length of the skirtboard, and which is removably held in place by a plurality of spaced apart clamping devices, each secured to the clamping bar and to the cover housing. A clamping device may, for example, comprise a first member secured to the housing, a second member pivotally attached to the first member and also attached to the clamping bar, and a third member passing through a threaded hole in the first member and engaging the second member so as to cause the second member to pivot and force the clamping bar against the skirtboard.