89mm Posts Galvanised 3.5" Sign Posts | 4 Metre - S275 Grade SteelThis 89mm diameter post is a common pole size for use with road signs, car park signs or notification signs. With a 3mm wall thickness it is designed to be robust for a wide range of applications. Thick, long lasting hot dip galvanised finish. Robust 3mm wall thickness. Industry standard size for small to medium sized signage applications (non motorway). Comes in a 4m length as standard but is available in longer lengths if required. These post are