Bottle platform insert with hole grid

A bottle platform insert: a pad of board with a grid of holes that the bottles' necks (or bodies) go through, standing on legs that fold down from its long sides (or all four), each leg with a foot that folds in under the pad so it stands steady on the case's floor. It holds bottles, jars, vials or tubes apart and upright in a case, or the necks of bottles lying in a shipper. The holes are round, or cross slits with a small relief hole that grip a neck; they go in rows and columns, or staggered (every other row moved half a pitch, one fewer in it). Sizes are the inside sizes of the case it goes in (L × W) and how high the pad stands (D). The board's thickness (T, chosen as the material) is allowed for: the pad is 2T smaller each way than the case, the corner cut-outs T wider than the legs. The holes are spread evenly over the pad, and the least wall between them is printed. Holes for bottles of more than one size (a row or column each) are given as lists of each column's and each row's cell (PS, WS: a hole is as wide as the smaller of its column's and its row's, at most HD; the pad's spare length shared evenly between the columns, its width between the rows).