You won’t have an issue with oil canning during the panels due to fireplace-retardent core between the metal panels. Uncovered-fastener devices tend to be more economical and, at 24” to 36”, consider considerably less time to install. Uncovered-fastener panels sacrifice many of the streamlined overall look of the hid panel, https://andypmjdy.blogpixi.com/29775210/details-fiction-and-vintage-metal-wall-decor