A sidewall construction arrangement for a trailer includes a plurality of upstanding panels. Each panel includes two opposing flanges. The flanges are disposed on opposing lateral edges of the panel. Adjacent flanges of two adjacent panels partially overlap each other. Each of a plurality of vertically oriented logistics posts includes two lateral margins. A first of the margins is attached to a respective first of the flanges of the two partially overlapping panels. A second of the margins of the post is attached to each of the first and second flanges of the two partially overlapping panels.