Cast In 1200mm RSJ Armco Barrier Post Galvanised SteelThis RSJ cast in 1200mm Armco post is part of our wide range of high quality Armco crash barrier components. The cast in variant is very simple in construction when compared to the bolt down version of this same product. As this product is cast in it requires an excavation to be made which can then be backfilled with an appropriate aggregate to secure the post in position. The 1200mm measurement of this post refers to its total length, once installed