Previous speakers, I can only give right. The mounted 9 F sockets can already get for 9 x 0.12, ie a proud charge only for the sheet metal and its assembly. The bushes were partly completely relaxed with me and I had to wear only their hex nuts. The panel is actually quite easy to "wound", but this does not detract from the usefulness. The grounding screw sat with me also very tight. In addition to the sheet was still a spare screw in the package.
I bought the grounding plate in spite of the price, because the sheet in its function is the best for an antenna system and it is certainly more expensive / more expensive to produce such a sheet itself. The cheap ground rails instead mostly used in installers in which to prepare the ground isolation of the antenna cable is removed, whereby the screen is often considerably damaged, you should not use.