Chapa plegada 1500mm desarrollo (maceta 270x50x50)

Spanish to English Tech/Engineering Construction / Civil Engineering building a swimming pool

hello,
this refers to the key/legend under the title" cerrajeria" (which I think is locksmith or locksmithing) the term I need is maceta (270x50x50), the same term is used under metallic profiling - perfil tubular 50.50.2 soporte maceta

thanking you in advance for your help