Abstract: A tray for supporting linear lamps in large cartons may be made to nest in one orientation and on rotation by 180 degrees may stack to form a latched array of lamp cradles. The cradle walls are formed along their lengths with alternating lengths and gaps. The alternating wall sections of the cradle walls are asymmetric right to left along the cradle axis. The walls forming the rows of cradles are arranged to be paired with a non-nesting wall on rotation by 180 degrees. In this way, at least one point along the length of each wall is supported in the non-nesting orientation. By forming latching features at the support points, the trays can be locked together as a rigid array of lamp cradles.