Large Cast Iron 'Platform 9 3/4' SignThis heavy cast iron sign is a must have for a HP fan. Made of solid cast iron weighing in at approximately 5kg. 60cm long 15cm high Requires four screws (not provided). *Please note, cast iron will oxidize (develop rust) when exposed to damp conditions. This is a natural ageing process and doesn't affect the structure of the iron in any way. It can simply be brushed off with a stiff wire brush and sprayed if you so desire.