A U-base clip component can include two opposing side walls joined together at an insertion end with a rib receiving cavity between the two opposing side walls. Aperture retention arms can extend outwardly from the two opposing side walls, respectively. Rib coupling arms can extend inwardly from the two opposing side walls. A seal component can include a central wall having a clip aperture therethrough. A first component annular seal can extend in a first direction away from a first side of the central wall. A second component annular seal can extend in a second, opposite direction away from a second, opposite side of the central wall. The seal component and the U-base clip component can have a shipping configuration in which the U-base clip component extends through the clip aperture with the seal component coupled between the trailing end and the aperture retention arms of the U-base clip component.