Pallets may be stacked to a maximum of six tiers high, but must not exceed 84 inches in height (lower height restrictions may apply). Individual pallets must be strapped or shrinkwrapped (or both). The stack of pallets must be securely banded with at least two straps or bands (not. First Solar Series 4 panels can be stacked flat on a standard Series 6 or similar pallet. To ensure stability, alternate the orientation of the panel junction boxes, stacking panels. PVpallet Series X (PVP000031) is a stackable, collapsable, adjustable pallet with walls on the 48” side for increased load protection. Dimensions. With photovoltaic (PV) panel installations projected to grow 19% year-over-year, getting stacking requirements right has never been more urgent. A good solar panel packaging design makes it easier to transport solar panels on a pallet, and provide excellent protection to the panels during transport.