Abstract: A panel retainer for retaining panels in end to end position, with edge post members aligned, comprising end portions of the edge post members having bores for receiving a retainer pin and having bosses to engage a properly sized pin inserted into the end portion. A retainer pin has a larger diameter portion which is frictionally engaged by bosses in one edge post member stopped in a location with a smaller diameter portion extending out of the edge post member. The second edge post member slideably receives the smaller diameter portion for making an assembly. The smaller diameter section clearing the bosses and the stop in the second edge post member so the edge post member abut with the pin aligning and retaining the first and second posts from transverse movement.