Balcony Fence Over Balcony/fence Trough And Plant Pot Holders?

Over balcony/fence trough and plant pot holders? - balcony fence

Looking through the headlines of the combination of metal on a balcony or a fence. I searched everywhere for these - B & Q, Homebase, Wickes and the Internet - and have created a space.

I saw many of them in France, both for the leadership and individual investors pots, but they have taken a gap in the United Kingdom.

Can anyone help?