Abstract: In a simple and robust panel mounting arrangement support pins project laterally and inwardly from rearwardly projecting flanges at opposed side edges of a panel, and are operatively engaged within angled slots extending rearwardly from front edges of flanges of supports, thereby to support the side edges of the panel. Each slot has a first limb portion which is open at the front edge of the respective flange and extends rearwardly therefrom, and a second limb portion which communicates with the first limb portion of the slot and which entends downwardly to a closed end thereof at which the associated support pin is disposed when the panel is fully mounted on the support.