A packaging box having a bottom. A supporting insert resting on the bottom of the packaging box. The supporting insert includes a ridge support, a partition panel, and a tab panel. The ridge support includes two support panels. Each support panel has a first side resting against the bottom of the packaging box, and a second side, opposite the first side, joined along a ridge line substantially above the bottom of the packaging box. The partition panel is substantially perpendicular to the bottom of the packaging box. The partition panel has a third side joined to the first side of one of the support panels. The tab panel is at a substantial angle to the partition panel. The tab panel has a first end joined to the partition panel along a line parallel to the ridge line.