This elegant balcony rail is made from 1 1/2" Hollow Section uprights and top rail with 1 1/2" flat iron convex basket curves, and is installed into the concrete floor prior to tiling. It is recommended that upstairs balcony rails be at least 40" high with minimum spacing of 4" between uprights. This rail is pre-primed with a epoxy-polyamide before standard priming and finished with a high gloss industrial enamel.