Abstract: A deflection clip and system. The deflection clip includes a rigid cross member having opposite first and second ends. An edge extends therebetween. Substantially parallel first and second flanges extend in a first direction substantially orthogonally from the cross member. The first and second flanges are mounted to the first and second ends respectively. A third flange is mounted to the edge of the cross member and extends in a second direction opposite to the first direction. The first and second flanges are spaced apart a distance substantially equal to the width of a horizontal element such as a track to which at least one vertical stud is slidably mounted so as to slide over exterior surfaces of the element for slidable translation in the first direction of the clip relative to the element. The third flange mounts to upper ends of the stud.