Shards are smaller pieces of acrylic with no handle attached. The maximum dimensions are either 4" and thick, or 6" and skinny. Any pieces larger are subject to an Oversize charge, select below. Maximum dimensions are 6x12", but that is pretty crazy. Keep in mind something with a large overhang or extends outward adds to the width of the material.
Large items get weaker. These should not be used as a paddle or slapper.