Painted Metal Wall art panels

I originally bought these for my dining room.  They look great, but the mounting on the back of 2 of them started to get loose which caused them to fall.  I have considered mounting these panels to a wood frame for easier mounting, but I just don't have the time for this project.  The artist originally made these by taking a sheet of aluminum (60" x 24") and then grinding various patterns and textures onto it. Then painting over top of the texture.  After that they cut the large panel into 7 pieces.  There is a small aluminum plate mounted to the back of each, which is held by double sided sticky pads.  Unfortunately these don't last.  The worked great for about 2 years, til the sticky pads started to break down.  Included are the original wall brakets that are used to attach these to the wall.  These are sold as is.