Review on Larger Square Single Mounting Bracket: Enhanced Stability and Versatile Installation System by Andrew Jenkins

I am using 6 of these signs to attach 3 disability signs to 6 inch steel poles at the edge of a commercial building parking lot. They are very easy to install and allow me to adjust the height, angle, etc. My only complaint is that the wind pulling on the shield loosens the bolts a bit, requiring occasional tightening. Some thread locker would be nice.