comprise mineral-based petroleum wax (as to approximately 55% of the total weight) and ground hardwood fibre (as to the remaining weight);

were manufactured from those constituents by a process of heat treatment and extrusion;

are approximately 320 millimetres in length, 90 millimetres in height and 85 millimetres wide;

have an average weight of 1.45 kilograms; and

have a sulphur content not exceeding 0.1% of the total weight.