A clip comprising a first wall member and a second wall member is disclosed. A cross-section of the first wall member is defined by a first side wall, a second side wall and a connecting wall that is positioned between the first side wall and the second side wall. A cross-section of the second wall member is defined by a first end and a second end, wherein at least a portion of the first end is connected to a portion of the first side wall of the first wall member and wherein a second end is positioned between the first side wall and the second side wall and spaced away from an inner surface of the connecting wall. The first wall member and the second wall member cooperate to define a channel having a first portion and a second portion.