Brick Guard Trailer Rack

The orange brick guards are sometimes called v or vee boards. In the pic they are in a dunnage rack. Plenty of places online that sell them.
Aluminum Dunnage Rack for Flatbed Trailers | Mytee Products

• Racks can be locked for extra security against theft with a simple padlock (not included)

 

Nothing on the net. Must be a small company or custom fabrication. I would hang out at the brick plant when you have time. When you see what you want ask the driver. Even if it is a company driver there is probably a tag or stamping on the unit. Then you can contact who made it.

 

Angle iron or channel iron & a good welder should be able to make some.

 

^x2

I have seen a lot of those brick board carriers; I have not yet seen a set that looked mass produced.