We used them for the plastic roof of our vegetable garden. They were easy to install and have held up well. Been outdoors for about a month and some showed signs of rust. A strong wind partially tore some of them before we finished gluing the plastic on all sides. They seem to be the most susceptible to rust - probably because water has gotten into them. Don't recall them being advertised as floor stands so no complaints. It seemed to me that they were installed very tightly and evenly. Looks quite professional. We are very happy. The price was very good and the installation tool was only $6 here at Revain. (We used double sided tape to hold the plastic in place)